Selecting Your Pack Size
Most Hyperlite packs use a unified sizing system based on torso length—not overall height. Because our technical backpack 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 40L, 55L, and 70L backpack models.
Note: Speciality vest-style packs (like the Pemi or Aero) and certain Day Packs may use chest circumference or a "one-size" fit. Always check the specific product page for unique fit guides.
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 (C7) vertebra.
- Using a flexible tape measure, have someone measure from that point down along the curve of your spine.
- Place your hands on your hips to feel your iliac crest, the top of your pelvic girdle. Position your hands so your thumbs reach behind you.
- Have your friend finish measuring where the tape crosses an imaginary line drawn between your thumbs. This distance is your torso length.
Torso Length Size Chart
| Pack Size | Torso Length |
|---|---|
| EXTRA SMALL | Less than 15.0" |
| SMALL | 15.0" – 17.0" |
| MEDIUM | 17.0" – 19.0" |
| LARGE | 19.0" – 21.0" |
| TALL | 21.0"+ |
Please keep in mind that if you receive a pack and need a different size, we’re happy to help facilitate an exchange.
