Gossamer Gear Gorilla 50 Ultralight Rucksack

50 Litres / Removable Internal Frame / Foam Stiffened Back / Hydration System Compatible
Weighs 858g (Medium size)
Code: AW20710
  • £269.99
  • (FREE Delivery on orders over £15)
+ In Stock Now | Usually dispatched within 24 hours

Gossamer Gear's new Gorilla 50 sees an additional 10L in capacity with an overall weight reduction on the previous version. This already ultralight rucksack is a great option for gram counters who still want a full feature set.

Gossamer Gear says:

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's Gorilla 50 Ultralight Rucksack has been updated with improvements to the foam used in the shoulder and hip belts, the removable foam back pad. There is also an additional increase in the capacity with an extra 10L provided. Finally, this version comes with a pre-installed hip belt that has improved shaping and pockets. The hipbelt provided with this pack is a medium size so, if you need a small or large size it will need to be bought separately. It is still a tough and durable pack despite its lower weight. The pack doesn't lack for features.

The bag gives the appearance of a roll top enclosure but you get a pair of clips to narrow the entrance then the top folds down to be closed with compression straps to keep your pack contents secure. The fold over top has a zipped pocket. The shoulder straps have a lot of comfortable air mesh padding. The pack also has 2 side pockets suitable for water bottles and a very large mesh pocket for further storage options. There are 2 compression straps on both side panels. There is a lashing loop which could be used as an ice axe holder but I'm not convinced how effective it would be.

- Reviewed by Ultralight Outdoor Gear

Help and advice: Choosing a rucksack at Ultralight Outdoor Gear
  • 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 hipbelt 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


  • Medium (including hipbelt): 858g
  • Large (including hipbelt): 890g

Hipbelt sizing (medium belt included and installed)

  • *Small hip belt (22" - 32" waist) (56 - 81 cm)
  • Included Medium hip belt (28" - 45" waist) (71 - 114 cm)
  • *Large hip belt (32" - 50" waist) (81 - 127 cm)
  • *Sold separately

Backpack Size (Varies greatly depending on body type and how you wear your pack)

  • Small 17.25” (11.5" - 15.5" torso) (29 - 39 cm) Generally fits people 5' 6" and under
  • Medium 20.25” (15.5" - 19.5" torso) (39 - 50 cm) Generally fits people 5'5" to 6'0"
  • Large 23.25” (19.5" - 23.5" torso) (50 - 60+ cm) Generally fits people 6'0" and up

Dimensions (Medium)

  • Height 22” / 55.9 cm to extension collar seam
  • Width 11” / 27.9 cm
  • Depth 6.5” / 16.5 cm
  • Extension collar adds another 11.5” / 29.2 cm of height


  • Total: 50L total
  • Main pack body to extension collar seam (medium): 32L
  • Max Carry Capacity: 30 lbs
  • For Comfort: 25 lbs


  • Custom 70 denier Robic ripstop nylon
  • Select use of 100 denier Robic nylon for reinforcement
  • Air mesh fabric for harness lining
  • Power mesh fabric pad holder
  • Custom stretch mesh fabric for big back pocket
Showing our 1 review for Gossamer Gear Gorilla 50 Ultralight Rucksack. Write a review ›
Review Summary - 5 out of 5 based on 1 rating.
August 25, 2021 | Ray
So light, so much space

First impression: they've left the rucksack out of the box, it can't be that light. Oh it is, excellent. Once unboxed it also looks quite small but it quickly expanded to take my tent, sleeping bag etc with no problem at all. A fantastic rucksack with lots of useful features that will make multi-day hikes much more comfortable.

Ultralight Outdoor Gear Limited