Find Your Store
Home Page

Cart, contains 0 items

When autocomplete results are available use up and down arrows to review and enter to select. Touch device users, explore by touch or with swipe gestures.
Expert Help
Earn Rewards

Mystery Ranch
Radix 57L Backpack - Men's

4.666666666666667 out of 5 stars
3 Reviews


Size Chart


Why We Like The MYSTERY RANCH Radix 57L Backpack

The MYSTERY RANCH Radix 57L Backpack is the versatile, durable companion with us when we show up in the parking lot with dirt, sweat, and a smile gracing our faces after racking up miles on the trail. The lightweight Ultra-PE Birdseye and Robic ripstop materials are built to handle any condition, ensuring our gear stays safe and compact no matter what the trails throw our way. The lightweight aluminum frame can be removed when we are prioritizing moving light and fast or be left in to provide structure for our gear. Compressible side and front pockets stash away our quick-access items like layers and snacks, and the front hip pockets hold our phone, GPS, and multi-tool. The adjustable harnessing options keep the bag sitting comfortably on our hips and provide a gender-specific, ergonomic fit.


  • Technical backpacking pack for chewing up miles on the trail
  • 57-liter capacity accommodates all of our overnight gear
  • Lightweight materials are durable and strong
  • Removable aluminum frame provides support and stability
  • Removable waist belt is padded for day-long comfort
  • Off-center front zip opening offers quick access to your gear
  • Front and side compression straps evenly distribute weight
  • Adjustable harnessing for a made-for-you fit
  • Item #MYTD048
Responsible Collection
[face fabric] 100% recycled 100D Robic nylon, [bottom, top] Birdseye Ultra-PE
57L (3635cu in)
removable 7000 series (aluminum)
Shoulder Straps
padded, adjustable
Waist Belt
removable, padded, adjustable
Hydration Compatible
1 zippered lid, 1 front stash, 2 side stash, 2 zippered hip belt
Gear Loops
Trekking Pole Carry
side, top
31.75 x 13 x 13in
Claimed Weight
3lb 12.8oz
Manufacturer Warranty

Overall Rating

4.5 based on 3 ratings

Review Summary

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

What do you think about this product?


Selecting an option will reload the available reviews on the page
5 out of 5 stars

February 17, 2024

Exceeding expectations

This pack has everything I could have asked for, the pockets are perfect and the room is great.


Originally reviewed on

4 out of 5 stars

February 15, 2024

This is too light to be a Mystery Ranch Pack!

I received my Radix 57 a couple of weeks ago and while I haven't used it yet, it is packed and adjusted for my trip. I do have some thoughts and nitpicks. First - I wish the top closure would fully close so that if you choose not to use the lid you could. A simple roll top would work to protect the inside from the elements. Second - the attachment points on the shoulder straps don't work well for a water bottle holder or phone pouch. Third - One of the waist belt pouches needs to be bigger since my Samsung A53 won't fit in the pouch and I can't use my phone pouch on the shoulder straps. My final thought is the straps really don't need to be as long as they are. I have little doubt I will love the pack since I own a Bridger and had a Dana Designs ArcFlex Astralplane I purchased in "88". This pack is much bigger than I expected, I probably could have gotten by with the Radix 47. The Radix seems comfortable and I am looking forward to using it soon.

user image

Originally reviewed on

5 out of 5 stars

February 2, 2024

Awesome backpack

Very comfortable pack, lightweight but still able to handle a good load. I particularly appreciate the fact it has a brain. It’s not commun for lightweight packs.


Originally reviewed on