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Gossamer Gear Gorilla 50 UL Backpack

Mega-versatile, incredibly light, and insanely durable - this is the pack for you hardcore ultralight, plan-ahead thru hikers, and minimalist warriors.

Features? This animal is loaded. You get a removable internal frame, external pockets - including that awesome big stretchy one on the back - quick-access fold over lid, durable and superlight custom fabrics, and a bunch of other stuff.


Gossamer Gear custom designed 70 + 100 denier Robic Ripstop Nylon 
Air mesh fabric for harness lining
Power mesh fabric pad holder
Custom stretch mesh fabric for big back pocket 

Removable internal frame
Includes a SitLight pad and a removable stay
New belt with added stiffener and stay integration for superior load transfer and comfort.
When using this pack without the belt you must remove the internal stay.


  • Belt with added stiffener and stay integration for superior load transfer and comfort
  • New buckles on side compression
  • Unisex ergonomic belt shape
  • The pack comes with a medium belt installed and small and large belts are sold separately to allow customers to choose the size they need
  • Tabs for attaching the fast belt and going frameless
  • Unisex ergonomic harness for both men and women
  • Dual exit hydration tube exit port
  • Drinking tube keeper loops on both shoulder straps
  • Two side mesh bottle pockets accessible while wearing pack
  • Full side and top compression
  • Air-mesh fabric on shoulder straps and hip belt for less friction, more cushion and more comfort
  • Rear mesh pocket great for drying gear and other gear storage
  • Trekking pole hardware for storing them outside the pack
  • Made of our custom 70 and 100 denier Robic nylon
  • Lash loop for ice axe
  • Includes a SitLight pad and a removable stay
  • Recommended for loads of 30 pounds or less

Recommended load capacity for 13kg or less. Ideal weight is 11kg.


Volume: 50 litres
Torso: 29 - 39cm (generally fits people between 5'6" and under)
Hip belt: 56 - 81cm (small)
Pack body: 452g
Pack frame: 74g
Sitlight pad: 54g
Total weight (with medium belt): 799g

Volume: 50 litres
Torso: 39 - 50cm (generally fits people between 5'5" and 6')
Hip belt: 71 - 114cm (medium)
Pack body: 479g
Pack frame: 86g
Sitlight pad: 62g
Total weight (with medium belt): 846g

Volume: 50 litres
Torso: 50 - 60+cm (generally fits people 6' and up)
Hip belt: 81 - 127cm
Pack body: 504g
Pack frame: 97g
Sitlight pad: 70g
Total with (medium belt): 890g

Please measure your torso length and hips for the correct pack size

How to Fit a Pack from Gossamer Gear on Vimeo.