Gorilla 40 Ultralight Backpack

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.

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Description

Description

The Gorilla 40 liter is a versatile mid-size pack with an removable internal frame, 4 built in pockets, side compression webbing, and a rugged exterior.


Whether your weekend plans include a trek in dense forests or a ramble on high alpine ridges, the Gorilla Ultralight Backpack has the options you need, without weighing you down.


Gorilla Backpack Features



  • New belt with added stiffener and stay integration for superior load transfer and comfort

  • New unisex ergonomic belt shape 

  • New larger more functional integrated hip belt pockets 

  • Unisex ergonomic harness for both men and women 

  • Recommended for loads of 30 pounds or less 

  • Made of our custom 100 and 200 denier Robic nylon 

  • It comes with a SitLight pad and a removable stay 

  • The belt is sold separately to allow customers to choose the size they need 

  • Two side mesh bottle pockets accessible without taking off pack 

  • Air-mesh fabric on shoulder straps and hipbelt for less friction, more cushion and more comfort OTT (Over-the-Top) closure system provides an easy secure closure

  • Rear mesh pocket great for drying gear and other gear storage 

  • New trekking pole hardware for storing them outside the pack 

  • Internal hydration sleeve and drinking tube keeper loops on both shoulder straps 

  • Side lash loop for ice axe

  • Includes updated hipbelt with stay coupler


Not sure which backpack to choose? Compare our ultralight packs!

Additional Info

Additional Info

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Specs

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Size

  • Small (13" - 16" torso) (33 - 41 cm.) Generally fits people 4' 11" to 5' 4"

  • Medium (16" - 19" torso) (41 - 48 cm.) Generally fits people 5'4" to 5'9"

  • Large (19" - 22" torso) (48 - 56 cm.) Generally fits people 5'9" to 6' 


Hip Belt Size (Sold Separately)

  • X-Small hip belt (22" - 28" waist (55.88 - 71.12 cm.)

  • Small hip belt (25" - 32" waist) (64 - 81 cm.)

  • Medium hip belt (32" - 38" waist) (76 - 96.5 cm.)

  • Large hip belt (38" - 44" waist) (91.4 - 112 cm.)

 

Average Weight (pack, stay and pad)

  • Small : 21.55 oz / 611 g

  • Medium : 24.3 oz / 689 g

  • Large: 26.15 oz / 742 g

 

Average Weight Hipbelt

  • X-Small: 4.2 oz / 120 g

  • Small: 5.6 oz / 159 g

  • Medium: 6.3 oz / 178 g

  • Large: 7.0 oz / 198 g

  • X-Large: 7.5 oz / 213 g

 

Capacity (Size Medium)

  • 2,354 c.i. (40 l.) total

  • 1,760 c.i. (28.84 l.) in main pack body to extension collar seam

  • 30 lb maximum carry capacity


Dimensions (Size Medium)

  • Height 23” to the extension collar only

  • Width 11”

  • Depth 6”

  • Extension collar adds another 9” of height

 

Materials

  • Custom 100 denier Robic ripstop nylon

  • Select use of 200 denier Robic nylon for reinforcement.

  • Select use of 70 denier silicone coated ripstop (silnylon)

  • Air mesh fabric for harness lining

  • Power mesh fabric pad holder

  • Custom stretch mesh fabric for big back pocket

Reviews

Great Pack!!Review by Flatlander
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I have been backpacking for about 20 years and to compare this pack to my old ones is really sad. The straps being wider than normal is a huge asset. Its also pretty much spectacular to have a front pocket that just seems to keep expanding and taking in more gear. I feel that this is the best pack on the market currently and I hope to be able to use it for a really long time. I have had a couple small issues with a seam partly unraveling, and the price is pretty steep. I would buy it again tho if I had to get another. Now if they would just make one with pink webbing my wife would want one too. (Posted on 4/20/16)
Marriage Insurance RequiredReview by SteveO
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I am 55 years young and hope to section hike the AT over the next several years. I already have the 2015 Mariposa so I can carry a lot of extras when the wife comes along and have been looking to downsize for solo treks. I received the 2016 Gorilla a few days after ordering. The small modifications from the 2015 model makes this perfection achieved. Don’t get me wrong, the 2015 models were great, but there are a lot of improvements here worth mentioning. The Hipbelt pockets are double width so they hold a lot more, so I ditched my shoulder pocket. The frame extends into the hip belt so the pack stays with you if you turn or jog the trail. The sitting pad is thinner so it actually provides more airflow on your back. The drain holes are now triangular and sewn instead of grommets and the metal zipper pulls have been removed. There are probably other changes that I have not identified, but overall awesome package at this low weight.
So I took this on three trips, two 10 mile afternoons and a 30 mile overnighter. For the solo overnighter I packed it with a Bearvault 450 with two days of food and piled on extra gear & water to get to 25 lbs. for the 10 milers I packed it light, 18-19 lbs total for a typical weekend with the wife, includes a duo tent, or 16-17 lbs for a solo hike. I really wanted to see if this could handle the heavier/longer trip load.
WOW! The 2015 Mariposa was already a better carry than anything else I have tried, the Gorilla is like carrying a cloud! I hiked 16+ miles the first afternoon from Bad Creek to Toxaway on the Foothills Trail. Typically during longer hikes with other light packs I have to play around with the load between the belt and shoulders to relieve the fatigue and minimize hip pain. Not with this pack, the load was held solid, super hipbelt and frame system made a heavy load feel like a cloud. No hip pain or fatigue whatsoever. A flawless design! The next day from Toxaway to Sassafras took a little longer but again, no hip pain or fatigue experienced with excessive weight.
Based on the results I am going to try pushing my mileage on solo hikes. Carrying the Gorilla with lighter loads in such a comfortable package really makes the difference. Based on this experience I may be able to push higher miles per day allowing me to carry far less food on section hikes. This makes my section hikes far easier and longer as I can push for 150-200 miles per week!
My wife joined me for the 10 milers. She typically carries a very light pack with some food and water. So I switched her with the Gorilla to let her try it out, what a mistake! She is now claiming this as her pack. So now I am stuck, I will have to get another Gorilla or will have to use the Mariposa when hiking with the wife. Does Gossamer Gear provide Marriage Insurance?
Anyways, thanks for making a great product even better. Don’t make any major changes!
(Posted on 4/19/16)
Love love LOVE this pack!Review by Allison
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Finally got my Gorilla pack and I am in love it already. First time around I ordered one that was a little too big, even though I thought I measured myself correctly. I have a narrow waste and a big butt, which is not a bad thing, but it makes the pack ride a little higher than usual. However after going with the small size pack, it fit like a glove. I will come back and add more after putting some miles on the pack, but the first impressions are beyond my expectations. (Posted on 4/11/16)
Gorilla is Goreat!!!Review by Princess of Darkness
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I have used both the Mariposa and the Gorilla, both are great but the Gorilla is much more compact. The fit is great, even for a hippy mexican woman such as myself! The hipbelt pockets are really roomy and convenient. The side pockets are easily accessible (and I have old janky shoulders that don't work great). The top of the pack is easily expandable for long carries and packing out six packs of your favorite wheat soda! I can't recommend this pack enough...just finished another 2000 mile backpacking trip and happy to say this pack performed BEYOND my expectations! (Posted on 4/3/16)
Great Value in an UL Pack!Review by Bonnie
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Wore this UL Pack on the Tahoe Rim Trail in October. Averaged 16-23 miles per day with base pack weight of 15 lbs (between 20 and 23 with food and water). Pack was great, no noticeable wear and mesh pockets on belt and side were convenient. Despite the long days on the trail, no back pain which was an initial concern since I had not worn the pack before and wasn't sure about the stays in lieu of a full frame-no issues. Mesh pocket on bag was great for airing out any wet gear during the day on the trail. Only down side (minor) is that the seat pad/back cushion can get a little wet on hot days resting against your back. Like the pack so much, I'm back buying the slightly smaller Pilgrim for my daughter. More exciting colors would be great. Overall, great value pack! (Posted on 3/20/16)
Amazing!!!Review by DarkDuc
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I purchased the Gorilla in 2015 for a trip to the Wind River Range in Wyoming. I was very impressed at the fit of this pack. I have been using packs that weigh 4x as much and thanks to a friend was introduced to the lightweight hiking movement. Our total weight for a 50 mile trek was 22 pounds, which it what I would typically carry for a two night trek! I'm not an ultralight guy, but shaving several pounds off my base weight has been phenomenal, and it all started with purchasing the gorilla. The pack fits great and was 3 1/2 pounds lighter than my previous pack. The material seems very durable as I compared it to a friend cuben pack (which was lighter but I feared I would rip it easily). The price point is great for this quality pack. My friend and I are planning a trip to the Pecos Wilderness this Spring and I have no reservations selecting the gorilla for this trip as well. The Gorilla is my go to pack for multi-day trips, and the cinch straps on the side can make it as big or as small as I want. (Posted on 3/7/16)
LOVE IT!!Review by jonfouquier
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Absolutely perfect! it truly forces you to go ultralight. It has honestly changed the game for me! took it on many trips this past summer and i can't wait for more. went on a trip to the enchantments in Washington State with it and it was perfect for the occasion. (Posted on 1/6/16)
Fiancée ApprovedReview by Jonathan
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This pack has so far exceeded my expectations. I am 5'7", 145lbs, and went with the medium pack + small hip belt. With some minor adjustments, it fits a treat. I ordered the torso length Nighlight Sleeping Pad to use instead of the SitLight pad and it fits very nicely. I was a bit worried that it would push the load a bit further off my back, causing more strain, but if you're using the pack for what it's rated (30lbs or less), than you shouldn't feel any difference. Plus, this hip belt works. A few of my past packs were ill-fitted to me, and all of the weight ended up on my shoulders and back. With the GG Gorilla, I can shrug my shoulders and not feel like I'm at the gym.

Because of my work schedule changing, I will have off Friday-Sunday and will have to be back to work Monday at 1pm. This pack is perfect for those 3-night trips that I will be seeing more of, though it could definitely accommodate food and fuel for double that.

My one complaint, which is easily fixed by simple modifications, is that the pack adjustment fabrics are way longer than necessary. But, if this is my biggest issue with the pack, I am not worried in the least. Most importantly, the fiancée, who works in design, approves because it coordinates with our Tarptent Double Rainbow. (Posted on 12/24/15)
Gorilla 40 Ultralight BackpackReview by stkeys
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I have used this pack twice now including my recent hike on the Old Loggers Path in PA. What can I say that has not already been said about this backpack. It's light, comfortable, durable, plenty of room, and well thought out design. I love it but, yes I have just one complaint. It's to strappy... compression straps should be shorter. Not a big deal it just bugs me. (Posted on 11/6/15)
Super light and streamlinedReview by Kimberly
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When I first got into backpacking I didn't know how important it was to have a lightweight backpack. I just went for a pack large and comfortable enough. Now that I've transitioned to ultralight it isn't important that I have a huge, bulky, built up comfy belt.
Now that I have the Gorilla I see how unnecessary all of that bulk is and actually how much of a hindrance it is! My pack is so much lighter now! I am not a large person so I really notice every pound on my pack. Before I loved backpacking and camping out at the destination-- just hated all the work and carrying the heavy weight to get there. Now that my pack is lightweight I can enjoy my whole trip and feel free tromping through the woods. (Posted on 11/6/15)
FantatsicReview by Heliotrope
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Recently purchased a Gorilla to fit the bill of an ultralight pack that can handle heavier loads such as desert water carrys and week long food carrys. I just finished a trip where I loaded the pack with 16+ lbs of food (for 8 days) plus 20 deg down quilt, 2 person tarp, inflatable pad, canister stove, wool shirt, fleece pullover, rain jacket, wind shirt, gloves, fleece hat, sawyer squeeze, umbrella, headlamp, etc. About 9.5 lbs of gear including the pack. I am pleased that everything fit in the gorilla. I could have squeezed in another insulation layer and another day of food no problem. I think the pack is poorly marketed for weekend warriors. It is clearly capable of handling the long haul comfortably. I love that it's' components ( hip belt, sit pad and frame) can be stripped down for a lighter pack for shorter trips. Totally outstanding backpack! I hope Gossamer Gear recognizes that it has achieved a perfect design and does not ruin it with improvements. (Posted on 10/1/15)
Simple, easy, perfect. Review by Liz Song
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I normally use a 52L pack with more bells & whistles, so I was fairly hesitant that the Gorilla would be 1) too small and 2) not the best fit for my frame. Could an ultralight pack really be comfortable and effective? *drumroll*

YESYESYES!
I LOVE MY GORILLA!

I took it out for a test hike before taking it on a backpacking trip and instantly experienced the comfort. And, it still felt comfortable throughout my entire 3-day trip. I didn't use the foam back, simply because I'm a heavy back sweater, and the foam made it so I would sweat more profusely than I already do (didn't know that was possible). The side pockets are PERFECT for two lean 1L water bottles. It's easy to grab them and put them back while hiking. The front mesh pocket was excellent for all that extra stuff that you need fast access to.

The other feature I can go on-and-on about are the side pockets on the hipbelt. They're large and can fit more than one might think. It's perfect for cameras/iphone, snacks, sunblock, chapstick, hand sanitizer, etc. It's the best one I've experienced so far on a pack.

I HIGHLY recommend this pack to anyone who's looking for an ultralight pack that doesn't compromise comfort.

PS. I'm 5'3", somewhat petite in frame, and my total pack weight is usually ~22-25 pounds. (Posted on 9/15/15)
My new favorite packReview by E.S.
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I use my Gorilla for winter day hikes and non-winter backpacking trips in the Adirondack Mountains of Upstate New York, and most of my time is spent off-trail. Despite hauling this pack up fifty trailless peaks, it has barely a scratch. The Gorilla is ideal for one-week backpacking trips and hefty day hikes year-round. Great stuff. (Posted on 7/24/15)
Perfect For Trekking In NepalReview by Heather
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I used the Gorilla for trekking on the Manaslu Circuit in Nepal in October 2014. It worked perfect! I chose not to use a porter so I carried all of my gear for tea house trekking, which was not a lot. The pack carried everything well, around 25lbs plus water and snacks.

(Posted on 4/12/15)
First steps toward ULReview by Jordan
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This backpack is a great first step in weight reduction for aspiring minimalist hikers. It will hold all of your hiking gear as well as a few extra doodads that you haven't decided to leave at home yet.

I was worried about sacrificing comfort when searching for a pack that would lower base weight. The lower weight of the pack and my decision to forgo some gear in order to reduce weight made comfort a non-issue.

I put my gear to the test on a regular basis and took this pack on a month of hiking and motorcycling around Wyoming and Montana. It did well ask things considered, but after one season there is some noticeable cosmetic wear. Given my experience with the Gorilla, I plan to purchase my next pack from Gossamer Gear. (Posted on 2/25/15)
LOVE LOVE LOVEReview by Heather
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I love this pack. It is light, comfortable, holds everything I need it to and compresses down when I'm headed into town. I've loaded it with climbing gear for an overnight mountaineering trip as well as a 4 day trek on the PCT. I've also used it as a day pack when I needed bulkier layers. The accessible hipbelt and side pockets make my "snackpacking" strategy possible (I eat while walking). The removable frame is also nice for when I am carrying varying loads. The most versatile pack I own. (Posted on 2/20/15)
Great for my bulkier cold-weather gearReview by Dan Bortz
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The new Gorilla is a very nice upgrade on an already fine pack. I used the Dyneema model in winter to carry my bulkier cold-weather gear, and the new Robic Nylon model will play the same role in my arsenal. I carried the pack for the first time on a 3-night trip on the Loyalsock Trail in PA.

The new Robic Nylon material (which I've experienced previously with the Type 2 Utility Pack) is really tough. I tend to be really tough on packs, but my Gorilla still looks brand new. The fabric is also fairly water resistant, allowing only minimal water penetration after hiking in rain, sleet, and snow. Did I mention that this stuff looks really slick, too?

The new compression straps and lid straps are all an improvement over the old system of cords and cord locks. I'm guessing this system comes with a minor weight penalty, but the improved functionality is well worth it. The trekking pole holders are also a nice touch. As someone who goes for long periods of time without using his poles, it's nice to have a convenient way to secure them to my pack.

Once I installed the aluminum stay correctly (after an uncomfortable, obscenity-laden 22-mile day), the new Gorilla was super comfortable. To be 100% fair, the backwards stay was completely my own fault. When installed properly, it contoured my back nicely and did a fine job of transferring the pack's weight down to my hips. The new shoulder harness (softer, more breathable padding and a more ergonomic shape) and hip belt are both better than their predecessors and work together to create a very comfortable carry. The addition of a "rib strap" was a nice touch to the harness, as I like using it on my QuikSak, Type 2, and Minimalist, but there wasn't enough slack in the shoulder harness for me to make use of it on the Gorilla. I have very broad shoulders and chest, so I believe the problem lies more with my body shape than with the pack (most backpacking gear tends to fit me strangely).

There are several external pockets (laid out similarly to the previous Gorilla). The mesh used for the back pocket seems durable, and is a nice upgrade over the previously used material. I found it easy to get my water bottles in and out of the bottle pockets while hiking (a HUGE deal to me). The hip belt pockets fit my Otterbox-encased iPhone 5S snugly, but they may be a bit too small for the iPhone 6 or many of the larger Android phones. The other hip belt pocket was perfect for maps and a few snacks. The lid pocket is perfect for a few quick-access items, like my Sawyer Mini filter and my headlamp.

The new Gorilla is both aesthetically and functionally better than its predecessor and is well worth the upgrade. (Posted on 11/27/14)
Ideal 3 season multi day pack.Review by Martin Rye
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Gossamer Gear sent me the new 2014 Gorilla pack to review and compare against past versions of the Gorilla which I have owned and used.

With its Dialled-in fit, and varied sizes I had no trouble matching the long size with a medium hipbelt to my 6’2″ frame.

The new shoulder straps are part of the new unisex harness and are by far the best shoulder straps of any version of the Gorilla packs I have used. The shoulder straps are down from 4in wide to 2.5; but thicker and more rounded and more comfortable. Ergonomic designed. I found the comfort notable and improved in use.

Shoulder straps are often overlooked in backpack construction design. It is essential shoulder straps are comfy and aid in effective load transfer and comfort, and the new Gorillas shoulder straps are very comfortable. Now unisex in design the Gorilla is open to so many more people to try and use.

The U frame internal stays supports the loads. While out testing the pack I carried extra kit than I would normally take to see how it coped, and never had any issues carrying the load and was able to hike over very rocky mountain terrain with ease and the stability as the Gorilla was tight to my back with a good centre of gravity from its small compact size.

The the 3rd generation pack has the new Robic material for its construction. It’s a nylon material with a high tensile strength. It’s supposed to be more puncture and abrasion resistant. As it’s 100% nylon and not a mix, this material is claimed to be superior and longer lasting. I so far i'm impressed how this material has not suffered any abrasion - nor shows any signs of damage.

With side compression straps as standard you can tension the pack and reduce volume for a tight, stable carry.

As with past versions of the Gorilla the lid has a pocket and rolls over to close. The closure is improved and you can over-extend the lid. The new side-mounted straps make the lid way better and there are other improved features, like the trekking pole D rings to help stow your poles easier.

But the big points are that integration of the hip-belt, and the vastly improved shoulder straps. The Gorilla uses a Thinlight sit pad that is removable. This sits over the hip-belt which is now thicker and wider, locking it in, which improves lumbar comfort, and the pad is held in place by Power Mesh, which aids in wicking and comfort.

On a recent 3-day hike in the English Lake District I used this pack over some hard mountain terrain, I was impressed with the comfort and stability. What you need from a pack. The big rear pocket again has been improved and there are, if needed, lots of attachment points. Built in hipbelt pockets, big, easy to access on the move side pockets all make for a ideal backpacker’s designed pack.

Comparing the Gorilla to other UL packs it is a fantastic light, and robust pack. Its low weight and ability to carry kit with so much comfort and stability make it a stand out from the crowd pack in the Ultralight market. (Posted on 9/22/14)

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