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Gossamer Gear Gorilla 40 UL Backpack

(Please measure torso size correctly before purchasing. Contact us for further enquiries)


The Gorilla is the go-to pack for the lightweight hiker or weekend warrior. Its versatility, comfort, and fit will keep you reaching for it on your next adventure.

Whether your weekend plans include a trek down a tropical forest trail or a ramble on high alpine ridges, the Gorilla Ultralight 40 is a versatile mid-size backpack that has the options you need without weighing you down.


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.

Three built in pockets, a new removable top lid, full side compression webbing, 
Hackable into multiple configurations, Unisex ergonomic belt shape, Three belt size options for a more custom fit, Large functional integrated hip belt pockets, Unisex ergonomic harness for both men and women, New dual exit hydration tube exit port, Internal hydration sleeve and drinking tube keeper loops on both shoulder straps, Two side mesh bottle pockets accessible while wearing pack, New 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, Lash loop for ice axe, Updated hipbelt with stay coupler.

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


Volume: 40 litres
Torso: 41 - 50cm (generally fits people between 5'5" and 5'10")
Hipbelt: 76 - 101cm
Pack body: 521g
Pack frame: 85g
Sitlight pad: 60gg
Total with no belt: 581g
Total with small belt: 844g
Total with medium belt: 865g
Total with large belt: 884g

Volume: 40 litres
Torso: 49 - 60+cm (generally fits people 5'11" and up)
Hipbelt: 91.4 - 127cm
Pack body: 538g
Pack frame: 99g
Sitlight pad: 75g
Total with no belt: 612g
Total with small belt: 890g
Total with medium belt: 910g
Total with large belt: 930g

Average Weight Hipbelt
Small belt: 181g
Medium belt: 199g
Large belt: 218g


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

How to Fit a Pack from Gossamer Gear on Vimeo.

Gorilla 40 from Gossamer Gear on Vimeo.