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Hyperlite Mountain Gear Unbound 40
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HMG Unbound 40 - represents Hyperlite's vision of the perfect travel companion on the longest trails, built to make life easier and carry the weight day in and out, no matter your time away.
At weight just 853 grams (size medium), the Unbound 40 is a joy to carry. But that’s just one of the many features that make this pack so ideal for the rigors and challenges that big distance trips present. Efficiency is the key to happy hiking, and everything about the Unbound 40 encourages forward momentum.
The outer pockets have the right volume for the gear you want access to during the day, while the simple and spacious interior welcomes those big items that only need to come out at camp. Low-profile daisy chains allow exterior cargo hauling customization if you need it, and all-around seam taping provides superior protection against the elements, so you don’t have to scramble to keep your essentials dry.
| MATERIALS | White: DCH50, DCH150, Hardline with Dyneema | Black: DCH150, Hardline with Dyneema |
| INTERNAL VOLUME | 40L |
| EXTERNAL VOLUME | 9L |
| WEIGHT | White: 853 g | 1.9 lbs | 30.1 oz Black: 914 g | 2.0 lbs | 32.2 oz *Average weight based on size medium |
| LOAD CAPACITY | Up to 18 kg| 40 lbs |
| BACK WIDTH | 25.4cm | 10" |
| HEIGHT | 82.6cm | 32.5" |
| TOP CIRCUMFERENCE | 88.9cm | 35" |
| BOTTOM CIRCUMFERENCE | 88.9cm | 35" |
ACCESSIBILITY ON THE MOVE
Large dual-entry outer pocket for quick grabs without needing to dig through everything inside. Generously sized side pockets and a stretch bottom pocket add even more storage options
MAKE IT YOUR OWN
COMPLETE SEAM TAPING
With the exterior binding, seam bulking is eliminated within the pack, allowing for more efficient taping and improved water resistance
| Zippered Pockets: | Hardline with Dyneema zippered pockets on removable hipbelt |
| Top Closure: | Roll-top closure system with removable side compression straps for customizable compression |
| Hip Belt: | Updated removable hipbelt provides more cushion, additional daisy chains for modularity, and the ability to customize your pack fit. Made using Hardline with Dyneema with 1/8" closed cell rigid foam, 3/8" closed cell foam, and spacer mesh |
| Back: | Integrated 1/8" high-density foam and shaped plastic PE sheet to give additional structure to the pack and complement the stay's load transfer |
| Loops: | Grab Loop |
| Side Straps: | Removable side compression straps allow for a modular compression system which attaches to integrated daisy chains |
| Top Compression Straps: | Top Y-Strap compression straps designed to secure gear |
| Shoulder Straps: | Hardline with Dyneema shoulder straps made with 3/8" closed cell foam and spacer mesh |
| Sternum Straps: | Updated sternum strap allows for easy adjustments along shoulder strap daisy chains |
| Buckles/Bungees: | New 5/8" hardware minimizes weight without sacrificing durability |
| Stays: | Single lightweight aluminum stay provides load transfer to hips |
| Sealing: | With the exterior binding, seam bulking is eliminated within the pack, allowing for more efficient taping and improved water resistance. |
| Pack Accessory Options: | Shoulder Pocket, Versa, Stuff Sacks, and Pods |
| Daisy Chains: | Four 1/4" daisy chains provide innumerable options for lashing gear compressing the backpack. |
| Compatible With: | Pods, Drawstring or Roll-Top Stuff Sacks, Stuff Sack Pillow, All Hyperlite Mountain Gear removable Hip Belts |
| Front External Pockets: | Large dual-entry front pocket provides significant storage as well as streamlined access to smaller items (i.e. tent stakes) without the need to dig/empty the pocket fully. Made from an extremely durable Dyneema® Stretch Mesh |
| Side External Pockets: | Oversized Side Pockets allow for streamlined access to water bottles and other gear on the go |
| Bottom External Pocket: | Bottom pocket features an extremely durable Dyneema Stretch Mesh, allowing for quick access to additional storage on the go. Ideal for easy access to snacks or a quick place to store your rain jacket |
How to Choose a Pack Size
Here is the video where HMG guys, walks you through the best way to measure your torso so you can find out which one of the four pack sizes they offer will fit you best .
If you need any help with torso sizing or have any other questions we will be happy to assist you.
Your torso length, not your height, determines your pack size. We recommend the following to determine yours:
- 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.
| SIZE | TORSO LENGTH / cm | TORSO LENGTH / inch |
| Small | 38cm - 43cm | 15.0” - 17.0” |
| Medium | 43cm - 48cm | 17.0” - 19.0” |
| Large | 48cm - 53cm | 19.0” - 21.0” |
| Tall | > 53cm | > 21.0” |
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.
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