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Katmai 55L Backpack

4.833333333333333 out of 5 stars
6 Reviews
Current price: $217.46 Original price: $289.95
25% off
Color:Oxide Green


Size Chart


Why We Like The Katmai 55L Backpack

This stand-out backpack is the ideal partner for multi-day excursions with all our gear in tow. Gregory's suspended mesh back panel ventilates our backs, keeping us cool and comfortable even on long, hot hikes. The odor-control mesh inhibits the growth of bacteria, keeping the pack free from overpowering stench. Storage features such as the accessible bottle holster, sunglasses stow, and various entry-zips make this pack ultra-convenient on the trail and at camp.


  • Fully-adjustable backpack with a masculine design
  • Ideal volume for treks that last less than a week
  • FreeFloat 360 mesh backpanel provides ventilation and suspension
  • Treated with bacteria-fighting Polygiene StaysFresh to reduce odor
  • Auto-rotating shoulder straps maneuver with natural body movement
  • Internal hydration sleeve lets you hang your preferred reservoir
  • Trekking pole loops adjust to carry any desired gear
  • Various access points allow you to reach anything in your pack
  • Item #GREZ071
Responsible Collection
210D HD nylon (40% recycled), 420D HD nylon (45% recycled), PFC-free DWR coating
[small/medium] 50L (3051cu in), [medium/large] 55L (3356cu in)
FreeFloat 360
Shoulder Straps
Waist Belt
3D comfort cradle
Hydration Compatible
internal sleeve
top, bottom, side
2 zippered lid, 1 stretch mesh side, 1 stretch mesh front, 2 zippered hipbelt
Ice Axe Carry
Trekking Pole Carry
Sleeping Bag Compartment
bottom, zippered
side straps
Weight Capacity
[small/medium] 28.7 x 12.6 x 16.5in, [medium/large] 30.3 x 12.6 x 16.5in
Claimed Weight
[small/medium] 4lb 8oz, [medium/large] 4lb 11oz
Manufacturer Warranty
limited lifetime

Overall Rating

5 based on 6 ratings

Review Summary

1 Stars - 0 reviews
2 Stars - 0 reviews
3 Stars - 0 reviews
4 Stars - 1 reviews
5 Stars - 5 reviews

What do you think about this product?


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4 out of 5 stars

May 31, 2023

Very Nice Pack!

I do really like my backpack - The side zipper entrance is a game changer! Its very comfortable to wear for long periods. If you are doing multiple days maybe get the 60 or 65L. The pockets on the hips are not able to be closed one handed so you need to reach across your body to close the zipper which is not the most convenient thing when you have 50 lbs in the pack.

Brandon E

Originally reviewed on

5 out of 5 stars

February 28, 2023

Used for my rim to rim grand canyon hike and it worked great! Very comfy with around 24 lbs of gear. Such a great pack for the price.

Miles B

Originally reviewed on

5 out of 5 stars

July 17, 2022

I just hiked 5 miles at Kings Mountain state park for a gear shakeout for a trip to Utah. I'm extremely impressed with the pack overall. As a 6 ft 2 in 300lb dude it was a game changer from my Kelty coyote 80 I've used for 13 years. Can't say enough good so far!

Casey V

Originally reviewed on

5 out of 5 stars

October 2, 2021

The Perfect Pack!!

I received this pack 2 days before embarking on a 150 mile trek through the backcountry of Yellowstone NP. This pack more than provided for all of my needs. Extremely comfortable, and extremely durable. I really put this pack through the the ringer, adding to my adventure with miles through Grand Teton NP and Badlands NP. This pack accommodated all of the various needs. Will be once again strapping up with this pack this weekend for an Appalachian Trail section hike, and a thru hike of the Foothills Trail.

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William G

Originally reviewed on Gregory

5 out of 5 stars

September 20, 2021

Great pack. Solid choice for 3+ days on the trail!

I got this pack about 3 weeks ago and I have tested it out several times. It is a very simple and easy-to-use pack with great features and comfort. It is easy to adjust the torso length and various straps, and all of the storage compartments work well. If you are looking for something to keep you comfortable and happy on the trail this is the way to go! Definitely for longer trips where you would need a BV 500 or more gear. In the last month, this pack has been used in the Sierra's, Humbolt-Toiyabe national forest in Nevada, and Pine Valley in Utah on 2+ night backpacking trips. I have never been disappointed by anything I have used from Gregory, and this bag has been a solid piece of gear. 10/10 would recommend!

Zach from REI

Originally reviewed on Gregory

5 out of 5 stars

March 31, 2021

Great pack

I bought this pack to replace an old Gregory forester that lived a happy life but has now passed on. I'm pretty stoked! Super comfy! Light! Nice color! Tons of storage! And holds the weight and stuff I need for backpack trips. I bought a Jade pack for my wife and she's just as stoked as I am.


Originally reviewed on Gregory