Hyperlite Mountain Gear Unbound 40
Our stock is live and accurate.
Hyperlite Pack Size Guide
Your torso length, not your height, determines your pack size. We recommend the following to determine yours:
1. Tilt your head slightly forward to locate the bony bump at the base of your neck. (This is your 7th cervical (or C7) vertebra).
2. Using a flexible tape measure, have someone measure starting at that spot and running down along the curve of your spine.
3. 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.
4. 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.
5. 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.
| Size | Torso |
|---|---|
| Extra Small | < 15" |
| Small | 15.0” - 17.0” |
| Medium | 17.0” - 19.0” |
| Large | 19.0” - 21.0” |
| Tall | 21.0”+ |
Everything the long trail needs, nothing it doesn't
The Hyperlite Mountain Gear Unbound 40 is a redesign aimed squarely at thru hikers and long distance backpackers travelling light. Dyneema Woven Composite 3.9 drops weight while adding durability, and two contoured removable stays work with a refined hip belt and wider, more naturally curved shoulder straps to keep the load steady over long days. Streamlined construction moves the seam taping inside the pack and swaps exterior binding for low profile sewn in daisy chains, leaving a cleaner exterior that still takes extra gear. A fully removable compression system makes securing trekking poles or oversized bottles straightforward, while the dual entry front pocket, bottom pocket, V-Pull hip belt and reachable side bottle pockets carry over from previous Unbound packs unchanged.
Features
- Roll top closure with vertical compression straps to adjust volume and keep the load compact and protected
- Fully removable, customisable compression system for trekking poles or oversized water bottles
- Two removable contoured aluminium stays add support under load and come out for weight savings
- Wider shoulder straps with a more natural curve, plus frequent bartacks for sternum strap adjustment
- Removable V-Pull hip belt with added cushioning for fine tuning the fit
- Integrated foam back panel for structure and comfortable carry
- Dual entry Dyneema stretch mesh front pocket for gear you want at hand
- Large side pockets reachable on the move, with removable shockcord lashing for tall items
- Low profile vertical and horizontal sewn in daisy chains for attaching extra gear
- Top Y-strap compression for securing gear over the closure
- Internal seam taping with no exterior binding
Specifications
- Volume: 40 L
- External Volume: 9 L
- Load Capacity: Up to 18.14 kg
- Back Width: 26.7 cm
- Height, Fully Unrolled: 82.6 cm
- Top Circumference: 92.7 cm
- Bottom Circumference: 92.7 cm
- Claimed Weight: 774 g (size Medium)
- Body Material: Dyneema Woven Composite 3.9
- Reinforcement Material: 100D Dyneema Gridstop
- Pocket Material: Dyneema stretch mesh