Gossamer Gear Gorilla 40 Ultralight Rucksack

40 Litres / Internal Frame / Foam Stiffened Back / Hydration System Compatible
Weighs 880g
Code: SS19896
  • £239.99
  • (FREE Delivery on orders over £15)
+ In Stock Now | Usually dispatched within 24 hours

Don't Forget to order your hipbelt with this pack - CLICK HERE

Gossamer Gear's Gorilla 40 Ultralight Rucksack is one of our lightest rucksacks in the 30-40 litre range. A very light-weight pack with a full-on feature set.

Gossamer Gear says:

Back to the old style lid with upgraded features like lighter, tougher fabric and a release buckle for your side compression this is the best Gorilla EVER.

Lightweight but surprisingly durable, the Gorilla is suitable for shorter trips or hikers who know how to crush it in the minimalism department.

The Gorilla holds everything you need when you refuse to bring everything. Winner of Outdoor Gear Lab’s Editor’s Choice award for best mid-volume light backpack, its versatility, durability and comfort make it the best weekend companion you’ll ever have. Also works on longer trips and through hikes with itineraries including grocery/laundry opportunities.

|Click here for more info on Gossamer Gear, how it all started and what are their key products.

Gossamer Gear's Gorilla 40 Ultralight Rucksack is one of our lightest rucksacks in the 30-40 litre range. The pack has a tough and durable feel despite its low 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 Gorila 40 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.

There is a removable internal stay. It is recommended you remove the stay if using the pack without a hip belts. The comfy foam back panel can quickly be removed to uses as a sit mat or sleeping pad. A very light-weight and versatile pack given the feature set.

- Reviewed by Ultralight Outdoor Gear

Read reviews here:

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
  • 3 hipbelt size options for a more custom fit
  • Tabs for attaching the fast belt and going frameless
  • Unisex ergonomic harness for both men and women
  • 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
  • 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
  • Updated hipbelt with stay coupler
  • Recommended for loads of 30 pounds or less
  • When using this pack without the belt you must remove the internal stay


  • Medium (excluding hipbelt): 678g
  • Large (excluding Hipbelt): 708g
  • Medium hipbelt weighs: 202g
  • Large hipbelt weighs: 220g

Don't Forget to order your hipbelt with this pack - CLICK HERE

Hipbelt sizing

  • Small hip belt (24" - 34" waist) (61 - 86 cm)
  • Medium hip belt (30" - 40" waist) (76 - 101 cm)
  • Large hip belt (38" - 50" waist) (91.4 - 127 cm)

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

  • Small 17.25” (11.5" - 15.5" torso) (29 - 41 cm) Generally fits people 5' 6" and under
  • Medium 20.25” (15.5" - 19" torso) (41 - 50 cm) Generally fits people 5'5" to 5'10"
  • Large 23.25” (19.5" - 23.5" torso) (49 - 60+ cm) Generally fits people 5'11" and up

Dimensions (Medium)

  • Height 22” / 55.9 cm to extension collar seam
  • Width 11” / 27.9 cm
  • Depth 6” / 15.2 cm
  • Extension collar adds another 11.5” / 29.2 cm of height


  • 40 L total
  • 28.8 L in main pack body to extension collar seam
  • 30 lb recommended maximum carry capacity, 25 lbs for comfort


  • 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
Be the first to review Gossamer Gear Gorilla 40 Ultralight Rucksack. Write a review ›