{"title":"BACKPACKS","description":"\u003ch2\u003e\u003cspan\u003eA Mountainsmith backpack...Goes Where You Go. And built tough to make it home.\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eWhether you're thru-hiking the PCT, taking a trek thru your local backwoods or carrying a load of gear for off-trail adventure, we have a pack built for you.\u003c\/span\u003e\u003c\/p\u003e","products":[{"product_id":"divide-evo-daypack","title":"Divide EVO Daypack","description":"\u003ch2 data-end=\"230\" data-start=\"189\"\u003eCity-Slick, Trail-Tough and Field-Ready.\u003c\/h2\u003e\n\u003cp class=\"\" data-end=\"230\" data-start=\"189\"\u003eThe \u003cstrong data-end=\"250\" data-start=\"236\"\u003eDivide EVO\u003c\/strong\u003e is your go-anywhere, do-everything daypack—built for the grind, ready for the wild. Whether you're navigating a packed train, ducking into an airport terminal, hiking out to glass a ridgeline, or slipping into your weekend escape, this discreet EDC pack delivers serious capability without shouting about it.\u003c\/p\u003e\n\u003cp class=\"\" data-end=\"949\" data-start=\"561\"\u003eDesigned for life on the move, the \u003cstrong\u003eDivide EVO\u003c\/strong\u003e balances clean lines with tactical-level utility. A side-access laptop sleeve keeps your tech secure and within easy reach, while the hidden bottom panel pocket stashes valuables where no one’s looking. Inside, smart organization keeps your gear tight and ready—whether that’s chargers and notebooks, or tags, gloves, and a compact field kit.\u003c\/p\u003e\n\u003cp class=\"\" data-end=\"1146\" data-start=\"951\"\u003eMade with durable, abrasion-resistant materials, it’s tough enough for the trail, subtle enough for the office, and streamlined enough to move effortlessly from city blocks to backcountry blinds. From commutes to camos—this pack doesn’t flinch.\u003c\/p\u003e\n\u003cp class=\"\" data-end=\"1146\" data-start=\"951\"\u003e\u003ciframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/o7kWWjVWmhM?si=iPm7AUoBTUXFjcYL\" height=\"315\" width=\"560\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e","brand":"Mountainsmith","offers":[{"title":"MULTICAM BLACK","offer_id":48220894363881,"sku":"25-75351-82","price":129.95,"currency_code":"USD","in_stock":true},{"title":"LODEN","offer_id":48220894396649,"sku":"25-75351-10","price":129.95,"currency_code":"USD","in_stock":true},{"title":"MULTICAM","offer_id":50465023525097,"sku":"25-75351-46","price":129.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0418\/4971\/6888\/files\/25-75351-82_Divide_EVO-Multicam_Black_MainALT.png?v=1761668832"},{"product_id":"2025-zerk-13-backpack","title":"Zerk 13 UL Daypack w\/2L Bladder","description":"\u003ch2\u003e\u003cstrong\u003e\u003cspan class=\"NormalTextRun SCXW161864701 BCX0\"\u003eDon't be a jerk, ride with the Zerk. Its Duzer approved and he's a really nice guy.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan class=\"NormalTextRun SCXW161864701 BCX0\"\u003eCo-designed with \u003cstrong\u003e\u003ca rel=\"noopener\" title=\"Ryan Van Duzer\" href=\"https:\/\/www.duzertv.com\/\" target=\"_blank\"\u003eRyan Van Duzer\u003c\/a\u003e,\u003c\/strong\u003e a prominent long distance bike packer and cycling powerhouse, this ultralight multi-sport hydration pack was developed with one mission; to go to the ends of the earth faster, further, and lighter; all while staying organized with the essentials and hydrated with the included 2L hydration bladder. Increase the carry functionality by taking advantage of compatibility with our\u003c\/span\u003e\u003cspan\u003e \u003ca href=\"\/products\/zerk-3l-loki-lumbar\" title=\"Zerk 3L Loki Lumbar pack for use with Zerk 13\"\u003e\u003cstrong\u003eZerk 3L Loki Lumbar\u003c\/strong\u003e\u003c\/a\u003e pack which acts as a chest rig on the \u003cstrong\u003eZerk 13\u003c\/strong\u003e shoulder straps!\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"NormalTextRun SCXW161864701 BCX0\"\u003eUtilizing High Tenacity ROBIC Nylon with super durable Ultra High Molecular Weight Polyethylene (UHMWPE) ripstop, the \u003cstrong\u003eZerk 13\u003c\/strong\u003e liter pack will be your best friend and greatest asset for whenever your adventures find you on two wheels or two feet.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ciframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/sIhi0xky_uo?si=wvVNioqXTQ0TjVnO\" height=\"315\" width=\"560\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e","brand":"Mountainsmith","offers":[{"title":"Darknight","offer_id":48543473139945,"sku":"26-50341-01","price":164.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0418\/4971\/6888\/files\/26-50341-01_Zerk13-Darknight-MainNEW.png?v=1761666630"},{"product_id":"mayhem-evo-30l-backpack","title":"Mayhem EVO 30L Backpack","description":"\u003ch2 data-start=\"189\" data-end=\"230\"\u003eCritical days require critical packs, the Mayhem EVO 30 agrees.\u003c\/h2\u003e\n\u003cp data-start=\"189\" data-end=\"230\" class=\"\"\u003e\u003cspan\u003eThe \u003cstrong\u003eMayhem EVO 30\u003c\/strong\u003e liter backpack is a mission-ready workhorse designed for all day comfort and best-in-class gear organizing performance. With design help \u0026amp; input from various Colorado-based Search \u0026amp; Rescue (SAR) teams, this hybrid panel loader pack system delivers robust and versatile organization (bugout bag anyone?); keeping you focused on demanding backcountry pursuits and built for professionals, survivalists, hunters and outdoorsman who rely on their gear in any situation. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"189\" data-end=\"230\" class=\"\"\u003e\u003cspan\u003eModular features like the customizable, girth hitched compression straps and a reversible front panel (Hi-Vis Blaze Orange) allow you to easily secure and organize your gear while staying visible in challenging conditions. The wide clamshell-style main compartment offers easy zippered access while maximum visibility is the rule with its blaze orange lined interior. Bottom panel loops allow for external A-Frame ski carry and the V-Cinch top compression webbing allows for rope management or even securing a small-to-mid size chainsaw body in the field. Internal organization features include zippered mesh pockets, a PALS webbing panel, vertical daisy chains for climbing gear organization, vertical slash pockets, hook \u0026amp; loop panel for accessory attachments, and an internal hydration bladder sleeve carries up to 3L (\u003cem\u003enot included\u003c\/em\u003e). Modular compression straps allow for customizing your load carrying style and the shoulder straps integrate with our new \u003cstrong\u003e\u003ca title=\"Timber EVO Chest Pack\" href=\"https:\/\/mountainsmith.com\/products\/timber-evo\"\u003eTimber EVO (SM \/ MD)\u003c\/a\u003e\u003c\/strong\u003e and our \u003cstrong\u003e\u003ca href=\"https:\/\/mountainsmith.com\/products\/zerk-3l-loki-lumbar\" title=\"Zerk 3L Loki Lumbar and chest pack\"\u003eZERK 3L Loki Lumbar\u003c\/a\u003e \u003c\/strong\u003econvertible waistpack for additional EDC chest carry options. Use the waistbelt PALS webbing to carry our extra, zippered accessory pouch, \u003ca href=\"\/products\/the-roo-accessory-pouch\" title=\"The Roo Zippered Accessory Pouch for Mayhem EVO packs\"\u003e\u003cstrong\u003eThe Roo\u003c\/strong\u003e\u003c\/a\u003e or go even more robust and slap a \u003ca href=\"\/products\/timber-evo\" title=\"Timber EVO for use on Mayhem EVO waistbelt\"\u003e\u003cstrong\u003eTimber EVO (SM \/ MD)\u003c\/strong\u003e\u003c\/a\u003e on the padded waistbelt with its provided MOLLE system...bomber!\u003c\/span\u003e\u003c\/p\u003e","brand":"Mountainsmith","offers":[{"title":"Loden","offer_id":49231442411753,"sku":"26-50311-10","price":239.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0418\/4971\/6888\/files\/26-50311-10_Mayhem_EVO_30-Loden.png?v=1762384180"},{"product_id":"mayhem-evo-45l-backpack","title":"Mayhem EVO 45L Backpack","description":"\u003ch2 data-start=\"189\" data-end=\"230\"\u003eYour extended outdoor mission just got a whole lot more EVOlved.\u003c\/h2\u003e\n\u003cp data-start=\"189\" data-end=\"230\" class=\"\"\u003e\u003cspan\u003eWith design input from various\u003cstrong\u003e \u003c\/strong\u003eColorado-based Search \u0026amp; Rescue teams, the \u003cstrong\u003eMayhem EVO 45\u003c\/strong\u003e liter backpack is designed to meet the demands of outdoor working professionals, search and rescue teams (SAR), hunters, rangers, trail crews, arborists, survivalists and any outdoorsman who needs uncompromising durability, gear carrying capacity, and best-in-class organization. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"189\" data-end=\"230\" class=\"\"\u003e\u003cspan\u003eThis Swiss Army Knife of packs, features custom positioned, girth hitched compression straps and a reversible front beaver tail panel (Hi-Vis Blaze Orange) allowing you to easily secure and organize your gear while staying visible in challenging conditions. Bottom panel loops allow for external A-Frame ski carry and the V-Cinch top compression webbing allows for rope management or even securing a small-to-mid size chainsaw body in the field. The wide clamshell-style main compartment offers easy zippered access while maximum visibility is the rule with its blaze orange lined interior. Internal organization features include zippered mesh pockets, a PALS webbing panel (the waistbelt accessory pocket can be relocated here), vertical daisy chains for climbing gear organization, vertical slash pockets, hook \u0026amp; loop panel for accessory attachments, and an internal hydration bladder sleeve carries up to 3L (\u003cem\u003enot included\u003c\/em\u003e). Modular compression straps allow for customizing your load carrying style and the shoulder straps integrate with our new \u003ca title=\"Timber EVO Chest Pack\" href=\"https:\/\/mountainsmith.com\/products\/timber-evo\"\u003e\u003cstrong\u003eTimber EVO (SM \/ MD)\u003c\/strong\u003e\u003c\/a\u003e or our \u003cstrong\u003e\u003ca href=\"https:\/\/mountainsmith.com\/products\/zerk-3l-loki-lumbar\" title=\"Zerk 3L Loki Lumbar and chest pack\"\u003eZERK 3L Loki Lumbar\u003c\/a\u003e\u003c\/strong\u003e convertible waistpack for additional EDC chest carry options. Use the waistbelt PALS webbing to carry our extra, zippered accessory pouch, \u003ca href=\"\/products\/the-roo-accessory-pouch\" title=\"The Roo Zippered Accessory Pouch for Mayhem EVO packs\"\u003e\u003cstrong\u003eThe Roo\u003c\/strong\u003e\u003c\/a\u003e or go even more robust and slap a \u003ca href=\"\/products\/timber-evo\" title=\"Timber EVO for use on Mayhem EVO waistbelt\"\u003e\u003cstrong\u003eTimber EVO (SM \/ MD)\u003c\/strong\u003e\u003c\/a\u003e on the padded waistbelt with its provided MOLLE system...bomber!\u003c\/span\u003e\u003c\/p\u003e","brand":"Mountainsmith","offers":[{"title":"Loden","offer_id":49234290606313,"sku":"26-50301-10","price":269.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0418\/4971\/6888\/files\/26-50301-10_Mayhem_EVO_45-Loden.png?v=1762386456"},{"product_id":"zevo-20l-backpack","title":"ZEVO 20L Daypack","description":"\u003ch2 data-start=\"189\" data-end=\"230\"\u003e\u003cspan\u003eYour current daypack has a problem? The ZEVO 20 is the solution.\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp data-start=\"189\" data-end=\"230\" class=\"\"\u003e\u003cspan\u003eLight enough to not hold you back, cool enough to stand out from the crowd, and durable enough to handle off trail backcountry terrain, the \u003cstrong\u003eZEVO 20\u003c\/strong\u003e will be your new go-to pack for all of your daily missions. The ZEVO Series of packs is a cross between the durability\/functionality of our EVO Series\u003cstrong\u003e \u003c\/strong\u003eand the countless miles of testing of our minimalist UL ZERK Series (of The Real Hiking Viking fame); this easy access 20 liter daypack with its roll top main compartment and hi-vis Blaze Orange interior allows for convenient and visible access to all of your essential trail gear \u0026amp; EDC items. Great for a 24-Hr Bag option with its small form factor and minimalist silhouette.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"189\" data-end=\"230\" class=\"\"\u003e\u003cspan\u003eThe multiple pockets on the exterior and the superior shoulder strap organization provide quick access of gear and your essentials. Modular compression straps allow for customizing your load carrying style and the shoulder straps integrate with our new \u003cstrong\u003e\u003ca href=\"https:\/\/mountainsmith.com\/products\/timber-evo\" title=\"Timber EVO Chest Pack\"\u003eTimber EVO (SM \/ MD)\u003c\/a\u003e \u003c\/strong\u003eand our \u003cstrong\u003e\u003ca title=\"Zerk 3L Loki Lumbar and chest pack\" href=\"https:\/\/mountainsmith.com\/products\/zerk-3l-loki-lumbar\"\u003eZERK 3L Loki Lumbar\u003c\/a\u003e\u003c\/strong\u003e convertible waistpack for additional EDC chest carry options. \u003c\/span\u003e\u003c\/p\u003e","brand":"Mountainsmith","offers":[{"title":"MULTICAM BLACK","offer_id":49333559197929,"sku":"26-51441-82","price":189.95,"currency_code":"USD","in_stock":true},{"title":"MULTICAM","offer_id":49234468536553,"sku":"26-51441-46","price":189.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0418\/4971\/6888\/files\/26-51441-82_Zevo_20_Multicam_Black_New.png?v=1762391147"},{"product_id":"zevo-13l-daypack","title":"ZEVO 13L Daypack","description":"\u003ch2 data-end=\"230\" data-start=\"189\"\u003eOur multisport pack for when multisport means getting down and dirty.\u003c\/h2\u003e\n\u003cp class=\"\" data-end=\"230\" data-start=\"189\"\u003e\u003cspan\u003eInspired by our ZERK 13 bikepacking pack, the \u003cstrong\u003eZEVO 13\u003c\/strong\u003e daypack ups the game with added off-trail durability and Multicam® styling for standing out in the crowd. Part of our ZEVO series of packs, this multisport pack encompasses a cross between the durability\/functionality of our EVO Series and the countless miles of testing of our minimalist and award-winning UL ZERK Series (of The Real Hiking Viking and Ryan Van Duzer fame). This body hugging 13 liter panel loader allows for convenient organization, ergonomic access and great interior visibility for all of your essential trail gear \u0026amp; sufferfest items. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"\" data-end=\"230\" data-start=\"189\"\u003e\u003cspan\u003eAmple pockets on the waistbelt, chest straps, side and front panels help keep necessary items at hand while the intuitive organization keeps everything in its right place. The outer daisy chains, dual bottle pockets, stretch mesh stash pocket, hydration bladder carry (up to 3L, \u003cem\u003esold separately\u003c\/em\u003e) and optional chest carry integration on the shoulder straps for the \u003ca href=\"https:\/\/mountainsmith.com\/products\/timber-evo\" title=\"Timber EVO Chest Pack\"\u003e\u003cstrong\u003eTimber EVO (SM \/ MD)\u003c\/strong\u003e\u003c\/a\u003e or our \u003cstrong\u003e\u003ca title=\"Zerk 3L Loki Lumbar and chest pack\" href=\"https:\/\/mountainsmith.com\/products\/zerk-3l-loki-lumbar\"\u003eZERK 3L Loki Lumbar\u003c\/a\u003e \u003c\/strong\u003egive you robust EDC options on how to kit out your bag for your next wild adventure. Use it for hiking, biking, dual-sport moto, skiing and everything in-between...stay \u003cstrong\u003eTrail Forged and Mission Ready!\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"Mountainsmith","offers":[{"title":"MULTICAM","offer_id":49234912903401,"sku":"26-51341-46","price":179.95,"currency_code":"USD","in_stock":true},{"title":"MULTICAM BLACK","offer_id":49333493137641,"sku":"26-51341-82","price":179.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0418\/4971\/6888\/files\/26-51341-82_Zevo_13_Multicam_Black_New.png?v=1761948417"},{"product_id":"backpack-raincover","title":"Backpack Raincover","description":"\u003ch2 style=\"text-align: left;\"\u003eIt's going to rain. Keep your gear dry, ok?\u003c\/h2\u003e\n\u003cp style=\"text-align: left;\"\u003eThis silicon coated, nylon taffeta raincover* will help shed water off of your backpack; so go ahead and stand under that tree if you want, but you don't have to. We've got you covered—keeping your pack dryer for longer in adverse weather conditions. Newly updated in 2026 to avoid any seams. Stretch-mesh, drawstring stuffsack included (\u003cem\u003eBlack sack for Lemon Chrome and Coyote sack for Blaze Orange\u003c\/em\u003e).\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e","brand":"Mountainsmith","offers":[{"title":"Lemon Chrome \/ SM","offer_id":50322254790889,"sku":"26-90010-05","price":19.95,"currency_code":"USD","in_stock":true},{"title":"Lemon Chrome \/ MD","offer_id":50322655609065,"sku":"26-90011-05","price":23.95,"currency_code":"USD","in_stock":true},{"title":"Lemon Chrome \/ LG","offer_id":50322655641833,"sku":"26-90012-05","price":27.95,"currency_code":"USD","in_stock":true},{"title":"Blaze Orange \/ SM","offer_id":50322655674601,"sku":"26-90010-67","price":19.95,"currency_code":"USD","in_stock":false},{"title":"Blaze Orange \/ MD","offer_id":50322655707369,"sku":"26-90011-67","price":23.95,"currency_code":"USD","in_stock":false},{"title":"Blaze Orange \/ LG","offer_id":50322655740137,"sku":"26-90012-67","price":27.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0418\/4971\/6888\/files\/SS26LGRaincover-LemonChrome-Main.png?v=1771025066"},{"product_id":"zerk-40-ul-backpack","title":"Zerk 40 UL Backpack","description":"\u003ch2\u003eA perfect marriage of Mountainsmith's Function-First-Design and an ultralight ethos, the all new ZERK 40!\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe \u003cstrong\u003eZERK 40L\u003c\/strong\u003e, the original cornerstone of our ZERK UL Series, has been tested \u0026amp; developed thru 10's of thousands of thru-hiking miles and co-designed with The Real Hiking Viking (AKA Jabba). When the goal is to hike faster, longer and with more efficiency, consider this award winning pack on your next ultralight adventure. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eFor this new addition to the Zerk UL series, we've added Zerk accessory compatibility with our Zerk 3L Loki Lumbar and Zerk 7L Toplid enabling you to add 10 additional liters for a robust and modular 50L pack. We've also included modular compressions straps (x4) and field serviceable bungees; not only increasing your versatility on the trail, but also allowing you to strip the weight when minimalism is key. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cbr\u003e\u003cstrong\u003eAdditional upgrades for 2026:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eMaterials upgraded to Robic® Nylon X-Grid Extreema (UHMWPE) Ripstop with UTS coating for both the 210d fabric (bottom panel, backpanel and reinforcement areas) and 100d fabric (main body)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eUltra durable Spundura stretch mesh pockets with UHMWPE grid in key wear areas (Side bottle pockets and front panel sleeve pocket)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAdditional upper side panel stretch mesh pockets for quick access, on-the-go items (avocados anyone?)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eA new front panel zippered security pocket for improved organization of trail valuables\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCompatibility with our new \u003ca title=\"Zerk 3L Loki Lumbar pack\" href=\"\/products\/zerk-3l-loki-lumbar\"\u003e\u003cstrong\u003eZerk 3L Loki Lumbar\u003c\/strong\u003e\u003c\/a\u003e pack which acts as a chest rig on the ZERK 40 shoulder straps or carry it stand alone with the existing ZERK 40 waistbelt; enabling you to pack the Loki Lumbar as an organizer pouch and then use it as a stand alone lumbar pack for side trips from base camp without carrying an extra waistbelt!\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eCompatibility with our new \u003ca title=\"Zerk 7L Toplid accessory\" href=\"\/products\/zerk-7l-toplid\"\u003e\u003cstrong\u003eZerk 7L Toplid\u003c\/strong\u003e\u003c\/a\u003e accessory, increasing your carrying capacity by an additional 7L\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eChanged interior pattern volume to better accommodate some makes of 700 in\u003csmall\u003e\u003csup\u003e3\u003c\/sup\u003e\u003c\/small\u003e sized bear canisters\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Mountainsmith","offers":[{"title":"DARKNIGHT","offer_id":50455728849129,"sku":"26-50441-01","price":229.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0418\/4971\/6888\/files\/26-50441-01_Zerk40-Darknight-Main.png?v=1771285102"},{"product_id":"zerk-20-ul-daypack","title":"Zerk 20 UL Daypack","description":"\u003ch2\u003eInspired by a Viking, used by weekend warriors. Meet the Zerk 20, the ultimate ultralight daypack.\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eBuilt for grueling day hikes and challenging summits, the \u003cstrong\u003eZerk 20 \u003c\/strong\u003eis the little sibling to our award winning Zerk 40L; loaded with all the features of the original but in a smaller, multi-sport form factor for weekend-slaying and personal bests. Developed in collaboration with The Real Hiking Viking as an out-and-back training pack to tackle the toughest terrain over long miles, this ultralight daypack will be your go-to for fast and light, all day outings. A Mountainsmith staff favorite!\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eFor this new addition to the Zerk UL series, we've added Zerk accessory compatibility with our Zerk 3L Loki Lumbar and Zerk 7L Toplid enabling you to turn this 20L daypack into a minimalist 30L backpack for hardcore overnights. We've also included modular compressions straps (x2) and field serviceable bungees; not only increasing your versatility on the trail, but also allowing you to strip the weight when minimalism is key. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cbr\u003e\u003cstrong\u003eAdditional upgrades for 2026:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eMaterials upgraded to Robic® Nylon X-Grid Extreema (UHMWPE) Ripstop with UTS coating for both the 210d fabric (bottom panel, backpanel and reinforcement areas) and 100d fabric (main body)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eA new front panel zippered security pocket for improved organization of trail valuables\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eUpper stretch mesh pocket on left side panel for quick access items (Avocados anyone?)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCompatibility with our new \u003ca href=\"\/products\/zerk-3l-loki-lumbar\" title=\"Zerk 3L Loki Lumbar pack\"\u003e\u003cstrong\u003eZerk 3L Loki Lumbar\u003c\/strong\u003e\u003c\/a\u003e pack which acts as a chest rig on the ZERK 20 shoulder straps\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eCompatibility with our new \u003ca href=\"\/products\/zerk-7l-toplid\" title=\"Zerk 7L Toplid accessory\"\u003e\u003cstrong\u003eZerk 7L Toplid\u003c\/strong\u003e\u003c\/a\u003e accessory, increasing your carrying capacity by an additional 7L, great for when you need to carry extra gear for weather\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Mountainsmith","offers":[{"title":"DARKNIGHT","offer_id":50461312942313,"sku":"26-50541-01","price":179.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0418\/4971\/6888\/files\/26-50541-01_Zerk20-Darknight-Main.png?v=1771345087"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0418\/4971\/6888\/collections\/Backpacks_collection.jpg?v=1610908152","url":"https:\/\/mountainsmith.com\/collections\/backpacks\/backpacks-backpack-accessories.oembed","provider":"Mountainsmith","version":"1.0","type":"link"}