Backpack Size & Torso Measurement Guide
Your torso length, not your height, determines your pack size.
How to Measure Your Torso
- Tilt your head slightly forward to locate the bony bump at the base of your neck. (This is your 7th cervical (or C7) vertebra).
- Using a flexible tape measure, have someone measure starting at that spot and running down along the curve of your spine.
- Place your hands on your hips so you can feel your iliac crest, which serves as the “shelf” of your pelvic girdle. (It’s the first hard thing you feel when you run your fingers down from the sides of your ribcage.) Position your hands so your thumbs are reaching behind you.
- Have your friend finish measuring at the point where the tape crosses an imaginary line drawn between your thumbs. This distance is your torso length.
Selecting Your Pack Size
All Hyperlite packs use a unified sizing system based on torso length—not overall height. Because our designs rely on a clean, streamlined suspension without load lifters or bulky adjustment systems, choosing the correct torso size is the key to achieving the balanced, close-to-body carry our packs are known for. Once you know your torso measurement, that size applies consistently across all of our backpack models.
Use your torso length to find your recommended size below.
Torso Length Size Chart
| Extra Small | < 15.0” torso |
| Small | 15.0” – 17.0” torso |
| Medium | 17.0” – 19.0” torso |
| Large | 19.0” – 21.0” torso |
| Tall | 21.0”+ torso |
If your measurement falls right in between sizes (for example, if you have a 17.0” torso, so you are right on the line between a Small and a Medium), we suggest you choose the larger torso size.
