[{"id":234523754648,"handle":"backpacks","title":"BACKPACKS","updated_at":"2026-03-11T05:06:52-06:00","body_html":"\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","published_at":"2021-01-06T08:59:31-07:00","sort_order":"price-desc","template_suffix":"","disjunctive":false,"rules":[{"column":"tag","relation":"equals","condition":"Shop: Backpacks"}],"published_scope":"web","image":{"created_at":"2021-01-06T11:27:37-07:00","alt":null,"width":2000,"height":797,"src":"\/\/mountainsmith.com\/cdn\/shop\/collections\/Backpacks_collection.jpg?v=1610908152"}},{"id":401545756905,"handle":"free-shipping","title":"FREE SHIPPING","updated_at":"2026-03-11T05:06:52-06:00","body_html":"","published_at":"2022-03-17T11:37:11-06:00","sort_order":"best-selling","template_suffix":"","disjunctive":false,"rules":[{"column":"variant_price","relation":"greater_than","condition":"79"},{"column":"variant_inventory","relation":"greater_than","condition":"1"}],"published_scope":"web"},{"id":234523918488,"handle":"all-terrain-backpacks","title":"HIKING BACKPACKS","updated_at":"2026-03-11T05:06:52-06:00","body_html":"\u003ch2 class=\"Polaris-Text--root Polaris-Text--headingLg Polaris-Text--regular\"\u003e\u003cspan class=\"_LinkPreview_33ypy_17\"\u003eHiking Backpacks and Daypacks\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"paragraph color-subdued tone-auto font-variant-numeric-auto\"\u003e\u003cspan\u003eAll Mountainsmith backpacks were 'Forged in the Rockies' to help you reach your next backcountry goal.\u003c\/span\u003e\u003c\/p\u003e","published_at":"2021-01-06T08:59:37-07:00","sort_order":"manual","template_suffix":"","disjunctive":false,"rules":[{"column":"tag","relation":"equals","condition":"Shop: Hiking Backpacks"}],"published_scope":"web","image":{"created_at":"2021-01-06T11:26:32-07:00","alt":null,"width":2000,"height":797,"src":"\/\/mountainsmith.com\/cdn\/shop\/collections\/Backpacks-Hiking-collection.jpg?v=1609957593"}},{"id":234528407704,"handle":"new-gear","title":"NEW GEAR","updated_at":"2026-03-11T05:06:52-06:00","body_html":"\u003ch2\u003eNewest Gear Drops for 2026.\u003c\/h2\u003e\n\u003cp\u003eCome find the latest and greatest with our all new gear additions to the Mountainsmith line-up for 2026. New Zerk UL packs and accessories for your next long trail hike? New EVO packs and accessories for really gettin' after it? New outdoor lumbar for your next adventure?Ā Yeah, it's all here.\u003c\/p\u003e","published_at":"2021-01-06T09:02:29-07:00","sort_order":"price-desc","template_suffix":"","disjunctive":false,"rules":[{"column":"tag","relation":"equals","condition":"Shop: NEW GEAR"}],"published_scope":"web","image":{"created_at":"2021-01-06T10:01:59-07:00","alt":null,"width":801,"height":641,"src":"\/\/mountainsmith.com\/cdn\/shop\/collections\/New_for_2020.jpg?v=1771456516"}},{"id":260899471512,"handle":"pro-discount","title":"NON DISCOUNT PRODUCTS","updated_at":"2026-03-11T05:06:52-06:00","body_html":"","published_at":"2021-03-02T07:58:45-07:00","sort_order":"price-desc","template_suffix":"","disjunctive":true,"rules":[{"column":"variant_compare_at_price","relation":"equals","condition":"0"},{"column":"is_price_reduced","relation":"is_not_set","condition":""}],"published_scope":"web"},{"id":234523721880,"handle":"products","title":"SHOP","updated_at":"2026-03-11T05:06:52-06:00","body_html":"\u003ch2\u003eThe entire Mountainsmith product lineāA to Z.\u003c\/h2\u003e\n\u003cp\u003ePlease choose a product type from the menu on the left to narrow down your selection.\u003c\/p\u003e","published_at":"2021-01-17T11:44:24-07:00","sort_order":"alpha-asc","template_suffix":"","disjunctive":false,"rules":[{"column":"variant_price","relation":"greater_than","condition":"1"},{"column":"variant_inventory","relation":"greater_than","condition":"1"}],"published_scope":"web","image":{"created_at":"2021-01-17T11:41:41-07:00","alt":null,"width":2000,"height":797,"src":"\/\/mountainsmith.com\/cdn\/shop\/collections\/Shop_Category_Image_1-17-2021.jpg?v=1610908902"}},{"id":204574720152,"handle":"all","title":"SHOP MOUNTAINSMITH","updated_at":"2026-03-11T05:06:52-06:00","body_html":"\u003ch2\u003eGolden, ColoradoāSince 1979\u003c\/h2\u003e\n\u003cp\u003eMountainsmith was founded on the need to build durable gear that could withstand the rigors of extended trips into the Rocky Mountain backcountry. This unwavering spirit, drive, and determination continues to fuel our mission today. We dedicate ourselves to designing, testing, and refining outdoor gear that genuinely ā\u003cstrong\u003eGoes Where You Go\u003c\/strong\u003eā. Join our diverse community of weekend warriors, global adventurers, outdoor professionals, and everyone in between, united by a shared passion for outdoor exploration and embracing life on the trail.Ā \u003c\/p\u003e","published_at":"2020-07-01T13:47:23-06:00","sort_order":"best-selling","template_suffix":"","disjunctive":true,"rules":[{"column":"variant_price","relation":"greater_than","condition":"1"},{"column":"variant_inventory","relation":"greater_than","condition":"1"}],"published_scope":"web"},{"id":435561464041,"handle":"zerk-series","updated_at":"2026-03-11T05:06:52-06:00","published_at":"2024-06-25T13:42:41-06:00","sort_order":"manual","template_suffix":"","published_scope":"web","title":"ZERK SERIES","body_html":"","image":{"created_at":"2025-03-04T13:17:38-07:00","alt":null,"width":2240,"height":1260,"src":"\/\/mountainsmith.com\/cdn\/shop\/collections\/AZ_Trail_Blog_Banner.png?v=1771456938"}}]
["Backpacks: Day Packs","Backpacks: Zerk Series","Inline","Shop","Shop: ALL NEW GEAR","Shop: Backpacks","Shop: Hiking Backpacks","Shop: NEW GEAR","Shop: Ultralight Backpacks"]
NEW FOR 2026! Designed for a Viking, built for weekend warriors, this multi-sport day pack is ideal for long hikes and quick summit ascents. Now with increased modularity, new ultralight materials and additional convenience on the trail. Our new Zerk UL series truly 'Goes Where You Go'!
Inspired by a Viking, used by weekend warriors. Meet the Zerk 20, the ultimate ultralight daypack.
Built for grueling day hikes and challenging summits, the Zerk 20is 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!
For 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.Ā
Additional upgrades for 2026:
Materials upgraded to RobicĀ® 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)
A new front panel zippered security pocket for improved organization of trail valuables
Upper stretch mesh pocket on left side panel for quick access items (Avocados anyone?)
Compatibility with our new Zerk 3L Loki Lumbar pack which acts as a chest rig on the ZERK 20 shoulder straps
Compatibility with our new Zerk 7L Toplid accessory, increasing your carrying capacity by an additional 7L, great for when you need to carry extra gear for weather
FEATURES
Roll top closure with opposing SR buckles for self closing roll top or for side panel attachment with removable straps
Extra wide shoulder straps with dual adjustable sternum straps
4 Large mesh front pockets on shoulder straps (2 per side) accommodate 500ml bottles, bear spray, cell phones, gps units, etc
Airflow EVA foam padded shoulder straps
Modular side compression straps (removable) for securing load throughout entire pack or discarding entirely
Customizable and removable front panel bungee system
Removable 1.5ā waistbelt with Gatekeeper attachment hardware. Works with accessory Zerk 3L Loki Lumbar (Sold Separately)
Large main compartment holds up to 40 liters of gear with extra 4L storage in roll top area
Expansive front stretch mesh pocket for hauling extra layers
Reflective bungee and select webbing hits for increased visibility
Removable interior frame sheet (EVA / Atilon)
Dual side water bottle pockets with angled openings for easy access
Adjustable over-the-top V-shaped compression strap with SR buckle closure
Hydration bladder sleeve with hose port (Bladder Not Included)
Compatible w/ Zerk 7L Top-lid (Sold Separately) for extra carrying capacity
CALIFORNIA WARNING: Cancer and Reproductive Harm | www.P65Warnings.ca.gov