Design
Unbound
"As an experienced thru hiker, this is the best pack in my collection yet. Kept all my gear dry through the Scottish Highlands, very sturdy and comfortable." — Scott C.
Redesigned for thru hikers and long-distance backpackers, the Unbound 40 and 55 are lighter, stronger, and more comfortable thanks to an updated build with the exceptionally durable Dyneema® Woven Composite 3.9. Two contoured removable stays, a refined hip belt, and wider, more naturally curved shoulder straps improve support and comfort under heavier loads, while streamlined construction with internal seam taping and low-profile sewn-in daisy chains creates a cleaner, more functional design. A fully removable, customizable compression system makes it easier to secure trekking poles or oversized water bottles, while trail-proven features like the dual-entry front pocket, bottom pocket, V-Pull hip belt, and accessible side bottle pockets remain as intuitive and efficient as ever.
KEY FEATURES:
- LIGHTER WEIGHT: With the new Dyneema® Woven Composite 3.9, the updated Unbound 40 and 55 offer better performance and comfort on trail while weighing less than the originals.
- MORE SUPPORT: Two contoured removable stays provide more support when carrying heavier loads, and redesigned wider shoulder straps feature a more natural curve for a better fit.
- STREAMLINED LOOK: A new modified construction allows seam taping inside of the pack without the need for the exterior binding, with a new, streamlined and user friendly sewn-in daisy chain.
- Volume40L
- External Volume9L
- Load CapacityUp to 40 lbs
- Weight27.3 oz | 773.9 g
- MaterialDyneema® Woven Composite 3.9, 100D Dyneema® Gridstop, Dyneema Stretch Mesh
- Back Width10.5 in | 26.7 cm
- Height - Fully Unrolled32.5 in | 82.6 cm
- Top Circumference36.5 in | 92.7 cm
- Bottom Circumference36.5 in | 92.7 cm
- CountryMexico
Average weight based on size medium
- Volume55L
- External Volume9L
- Load CapacityUp to 40 lbs
- Weight28.9 oz | 819 g
- MaterialDyneema® Woven Composite 3.9, 100D Dyneema® Gridstop, Dyneema Stretch Mesh
- Back Width10.5 in | 26.7 cm
- Height - Fully Unrolled36.5 in | 92.7 cm
- Top Circumference41 in | 104.1 cm
- Bottom Circumference36.5 in | 92.7 cm
- CountryMexico
Average weight based on size medium
To maximize the performance of your Hyperlite Mountain Gear products and ensure that they live a long, reliable, and productive life, we recommend that you familiarize yourself with their Care Instructions.
CARE INSTRUCTIONS
Product Walkthrough Video | Unbound
WHY CHOOSE THE UNBOUND?
NO SPACE WASTED
Increase your efficiency with easily-accessible side bottle pockets, dual-entry front pocket, and bottom stash pocket.
MODULARITY FOR ANY NEEDS
The removable side compression shockcord system with an adjustable hook to secure trekking poles or larger water bottle.
HELP AT THE HIPS
Removable Hipbelt for better load support when needed with heavier carry weights and an easy V-Pull-style cinch system.
