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Starts at $399.99 USD

Part of the YNOT Pro-Series, made to work hard for those who work hard. Built with the same durable features as our traditional backpacks, but with increased carrying capacity and numerous added touches. Designed to fit a full sized bankers box, and is over 75L in capacity (over 4,400 cubic inches!). We have one Mammoth left in stock at our Queen Street West location. Otherwise, these backpacks are made built-to-order. Looking for your next work bag? Contact us at info@ynotmade.com to order your own Mammoth. This bag is laser cut and custom changes to dimensions are available.


  • Large main compartment with military-grade hardware, fits a full-sized bankers box
  • Oversized side pockets with compression straps, expands or compresses to suit various loads
  • Pleated front pocket to keep smaller goods organized and secure
  • YNOT semi-rigid closed cell foam back pad
  • YNOT Swoop System compatible (internal fasteners to secure vertical laptop sleeves)
  • YNOT Covert Pocket compatible


  • 600D Tough Duck or 1000D CORDURA®, North American milled
  • National Molding™ hardware, North American made
  • 8.5 oz Vinyl Truck Tarp floating separated liner, Bio-Pruf Treated™
  • Shoulder straps and back pad includes non-absorbing closed-cell foam
  • Heavy-duty coil zipper with metal pull
  • Reinforced bottom corners for added durability
  • Sewn with no. 69 nylon thread
  • Bartacked for reinforcement
  • Made in Toronto, Canada. Lifetime warranty.


  • Dimensions: Height: 25", Width: 16", Depth: 12"
  • Volume: 75L
  • Weight: 1.5 kg/3.4 lb