Hyperlite Mountain Gear Unbound 55 Backpack

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.

SPECS

• Volume-55L
• External Volume-9L
• Load Capacity-Up to 40 lbs
• Weight-28.9 oz | 819 g
• Material-Dyneema^® Woven Composite 3.9, 100D Dyneema^® Gridstop, Dyneema Stretch Mesh
• Back Width-10.5 in | 26.7 cm
• Height - Fully Unrolled-36.5 in | 92.7 cm
• Top Circumference-41 in | 104.1 cm
• Bottom Circumference-36.5 in | 92.7 cm
• Country-Mexico

Average weight based on size medium