Fast Track Pack Sizing

  1. Small torso (17″-18.5″) packs measure 19″ from the shoulder straps to the bottom of the pack and 18″ to the center of the 1″ loops for the hip belt.
  2. Medium torso (19″-20.5″) packs measure 21.5″ from the shoulder straps to the bottom of the pack and 20.5″ to the center of the 1″ loops for the hip belt.
  3. Large torso (21″-22.5″) packs measure 23.5″ from the shoulder straps to the bottom of the pack and 22.5″ to the center of the 1″ loops for the hip belt.



Torso Size:

All packs are built to your specific torso. To find your torso length you will need to find your C7 vertebrae and your iliac crest/hip shelf and measure the distance between them. Still need help finding your torso? Check out this video https://youtu.be/Vl1wHHMcSrA

Packs without a hip belt will measure from the bottom of the pack to where the shoulder straps are sewn in. This is the same for packs with a 1″ removable hip belt or fanny pack.

Packs with a padded hip belt will measure from the center of the hip belt to where the straps are sewn in. If you choose to have load lifters then your pack will measure from center of hip belt to the load lifters.



These packs are designed for ultralight thru-hikers. The construction utilizes CT9HK.18/wov.6 Black (5.0 Oz. Dyneema®) in the areas that need it most. The new shoulder strap pockets are designed to hold a phone or snacks really well. The bottom pocket is made of a durable Spandex Nylon blend and is super duper stretchy plus it has a small opening for trash. Use the lower SBO V Loop to stow your shelter, sleeping pad or chair (chair on a thru-hike? Nah!). Adjustable side pockets make it easy to lock down your water bottles, fuel canister or cook system. The top Y strap was designed to keep your bag of chips safe while you put in the miles. You can also store your sleeping pad or bear canister up there… but who would do that? And we even decided to add trekking pole loops so you have a place to store them, keeping your hands free to upload your continuous Instagram stories.