Men's and Unisex Bindings
Binding Size Small Medium Large X-Large
Men's Boot Size 2 - 5 5 - 8 8 - 11 11 - 15
Women's Boot Size 3 - 6 6 - 9 9+
Euro Boot Size 33.5 - 36.5 36.5 - 40.5 40.5 - 44.5 44.5 - 50
UK Boot Size 1 - 4 4 - 7 7 - 10 10 - 14
Mondo Boot Size 20 - 23 23 - 26 26 - 29 29 - 33

(Manufacturer's size specifications subject to change)


Women's Specific Bindings
Binding Size Small Medium
Women's Boot Size 3 - 6 6 - 10
Euro Boot Size 33 - 36 36 - 41
UK Boot Size 1 - 3.5 3.5 - 7.5
Mondo Boot Size 20 - 23 23 - 27

(Manufacturer's size specifications subject to change)


FIND YOUR BACKPACK SIZE
With the right fit, you and your pack can become the best of buddies on short or long hauls. Here is how REI's pack-fitting experts make sure you get into the right pack.
1. Measure Your Torso Length.This is key: Your torso length, not your height, determines your pack size. Here's how to measure it:
  • With the help of a friend, locate the bony bump at the base of your neck. This is where the slope of your shoulder meets your neck, also known as the seventh vertebra. Tilt your head forward to locate it more easily.
  • Using a flexible tape measure, have your friend start measuring at that spot down your spine, following the curves of your back.
  • Place your hands on your hips to feel your iliac crest, the twin pointy protrusions on the front of your hips. Position your hands so your thumbs are reaching behind you.
  • Finish measuring at the point where the tape crosses an imaginary line between your thumbs. This distance is your torso length.
2. Measure Your Hips
While less critical than torso length, this is helpful if you're considering a pack that offers multiple sizes or interchangeable hipbelts. To measure, take your tape measure and wrap it around the tops of your hips. This is the "latitude line" where you can feel your iliac crest, the two pointy bones on the front of your hips. A properly positioned hipbelt will straddle your iliac crest at this line.

3. Find the Pack's Measurements
When shopping for a pack on REI.com, you can find the torso length and hip measurement info as part of each product's description. To compare multiple packs at once, type "packs" into the search box and then check the compare box on as many models as you are interested in. Click on the compare button to create your own comparison chart. Note: If a pack comes in multiple sizes, you'll need to go to that pack's page to get the specifics on each size.