Radix 31L Backpack - Men's
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Mystery Ranch Radix 31L Backpack
The RADIX 31 was designed knowing a little less weight can make your mountain mission a whole lot better. Crafted from lightweight Ultra-PE Birdseye and durable, recycled Robic Ripstop fabric, this pack takes the edge off those grueling ascents without sacrificing toughness. An array of adjustable features, like a removable frame, and plenty of external pockets helps you master the game of cubic inches. And the option of women’s or men’s harnessing provides a natural and comfortable fit.
- Responsible Collection
- Recycled/Repurposed
- Material
- Ultra-PE Birdseye, recycled 100D Robic ripstop
- Volume
- 31L (1755cu in)
- Support/Suspension
- Removable 7000 Series aluminum frame
- Shoulder Straps
- padded, adjustable
- Waist Belt
- padded, adjustable
- Hydration Compatible
- yes
- Access
- top
- Pockets
- 2 side, 1 front, 1 lid, 2 zippered hip
- Trekking Pole Carry
- 2
- Compression
- side, front
- Dimensions
- 23 x 12 x 9.5in
- Claimed Weight
- 3lb 1.6oz
- Activity
- hike
- Manufacturer Warranty
- lifetime
Reviews
Q&A
Overall Rating
4.5 based on 8 ratings
Review Summary
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Selecting an option will reload the available reviews on the pageSeptember 2, 2024
Light and spacious.
Pack is flexible and capable of holding for more than you think. 4 stars because I feel the lid would be better if it had storage like it’s two bigger counterparts.
Originally reviewed on mysteryranch.com
August 22, 2024
Perfect Pack
I bought the Radix31 for hiking and camping trips in the Colorado Sangres, it's by far, the best pack I have ever owned. Extremely comfortable!
Originally reviewed on mysteryranch.com
June 3, 2024
Light Weight & Stylish
After trying out the Bridger 35 for I bit I opted for this pack because it was a familiar and comfortable yoke combined with a light weight construction. Of course only slightly smaller than the Bridger 35, I was sup surprised to see that the Radix 31 seemed to give me more usable space for the same load (odd?). Plus it has the outer pockets to carry the quick access items I wanted to stow. It’s still very comfortable but I do think the Bridger yoke is much more comfortable than this design. But it doesn’t have the chest pouches. Couple drawbacks of the Radix 32. It doesn’t have a top flap pouch! Why not? And to get into the bag, although not difficult, it takes a few extra steps to completely unzip to gain access to the bottom of the bag. I’m planning to do the Tour du Mont Blanc with bag drops along the way this fall (no need to pack a tent, sleeping bag, etc.) so I needed a lightweight and comfortable bag to carry just the essentials for the day and a few extra items as needed. This bag fit the bill to be comfortable and light. I recommend.
Originally reviewed on mysteryranch.com
May 29, 2024
Ok pack
You have a choice, large cumbersome feeling pack or a smaller limited use pack. I want a moderate pack for hunting first and other use second. The bag configuration is another story.
Originally reviewed on mysteryranch.com
April 5, 2024
Great features
My first experience with Radix 31. I am happy. it is very easy and very comfortable for a hike of 13 km up to 1600 m.
Originally reviewed on mysteryranch.com
March 8, 2024
Comfy, light, and yet beefy
I just got this pack today and haven't used it yet, but I'm in love already. I can tell it will be really comfortable with heavy loads. Love the hip belt pockets for easy access while hiking. I also really like the outside compression straps in order to cinch down smaller loads. I needed a pack this size that is a bit larger than a day pack. It will be perfect for an inn to inn hike I'm doing in Solvenia in the fall. This pack will easily accommodate a 1-2 night hike. My only nit-pick is why no small zipper pocket on the lid? I'll be taking this as carry-on, and having an easily accessible but secure pocket on the outside would be nice for passport, wallet, gum, phone, etc. I didn't even notice it didn't have one when I was looking on-line. My bad, that's on me, I'll figure something out.
Originally reviewed on mysteryranch.com
March 3, 2024
Light weight, but still carries weight comfotably
I have an older version of Coulee 40 which I use regularly. It is super durable and I live the tri-zip access...but it is a bit on the bulky/heavy side. I swapped out for the Radix 31 and have used it on several hikes. I've loaded it with around 35lbs for testing and it carries very well. It feels a bit more comfortable than my coulee. The shoulder straps sit better and the pack seems to move with me better. I'm sacrificing a bit on ease of access into the main compartment, and there is no brain, but it's worth it for the weight savings and comfort.
Originally reviewed on mysteryranch.com
February 9, 2024
Great pack with so much potential
I got this about a month ago. I have used it on three long day hikes so far. The build quality is up the Mystery Ranch's high standards, materials are holding up great for off trail bushwhacking in the Canadian Rockies. Simply love the Coulee style Yoke setup, super adjustable for the perfect fit.
Originally reviewed on mysteryranch.com
Need Expert Advice?
Our Gearheads Can Help
April 2, 2024
Is this pack carry-on compliant?
March 31, 2024
What is the load range of the Radix 31?
March 26, 2024
What is the max load for the radix 31? Is there a pocket for keys and a wallet? And will the front pocket fit climbing shoes?
March 23, 2024
Is the volume for the main compartment or does it include the pockets?
February 28, 2024
Is the hip belt removable?
February 13, 2024
Is this pack waterproof?
February 9, 2024
Where is this pack manufactured at?
February 7, 2024
Is the material of the radix durable enough for search and rescue operations and quick field deployments for disaster? Or mainly personal hiking use?
February 2, 2024