Mayhem EVO 45L Backpack

A robust and multifunctional 45 liter pack built for those heading into the backcountry. Designed with unique internal and external modular organization options to carry essential gear for your next wilderness adventure. This pro-level backpack helps keep you prepared for any challenge in the field.

Color
Loden

With design input from various Colorado-based Search & Rescue teams, the Mayhem EVO 45 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.

This 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 & loop panel for accessory attachments, and an internal hydration bladder sleeve (up to 3L). Your extended outdoor mission just got a whole lot more EVOlved.

FEATURES

  • Hybrid panel / top loader system with wide zippered opening interior access
  • Front panel expansion sleeve with attachment loops and accessory zippered pocket (Reversible for Hi-Vis, Blaze Orange Safety Panel)
  • Lower section of front panel allows for pass-thru for snowboard carry, blade-down chainsaw carry, hand tool carry (shovel, McLeod, Rogue, axes, etc.) and is removable when necessary
  • Dual side bottle pockets with field serviceable bungees
  • Modular compression straps (girth hitched) for custom carry options and positioning
  • Front panel zippered pocket with expansion gusset
  • Dual sternum straps for increased load management during physical activity
  • Load lifters on shoulder straps for additional custom fit and weight management
  • Rope and A-Frame ski carry for backcountry pursuits
  • Removeable high density foam framesheet with hoop frame load dispersion
  • Forward pull waistbelt with side PALS webbing & modular MOLLE-style accessory pouch
  • Dual zippered, color-coded compartments on top panel
  • Front panel hook & loop patch panel for agency badges, morale patches, accessory attachment, etc.
  • Dual side panel bottle pockets with over-under strap pass thru
  • Ice axe & mixed tool lower panel storage sleeves (Hypalon reinforced)
  • Exterior body fabric backpanel helps shed ice, snow, mud and dirt
  • Shoulder straps allow for accessory chest carry of the Timber EVO SM or MD (Available Spring 2026) or our ZERK 3L Loki Lumbar (Available Spring 2026)
  • Bottom panel compression straps for additional load carry
  • Hi-vis, Blaze Orange interior for maximum visibility
  • MATERIALS

    • 420d Nylon Ripstop Dobby w/ DWR*
    • 150d High Density Poly Liner*
    • YKK® Zippers
    • EVA Foam
    • *There are no intentionally added PFAS in this item

    CALIFORNIA WARNING: Cancer and Reproductive Harm | www.P65Warnings.ca.gov

    DIMENSIONS

    • 26" x 11.5" x 8.25"(H x W x D)
    • Torso Size: 16"-20"

    VOLUME

    • 2685 in3 / 44 L

    CAPACITY

    • Waistbelt Size Range: 29"-48"
    • Recommended capacity up to 55 lbs

    WEIGHT

    • 4 lb 4 oz

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