Hyperlite Mountain Gear Unbound 40L Ultralight Backpack
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The Unbound is Hyperlite Mountain Gear's redesigned thru-hiking pack, built from Dyneema® Woven Composite 3.9 for an ultralight, highly abrasion-resistant carry. A dual-entry stretch-mesh front pocket, twin side bottle pockets and a bottom stash pocket keep gear accessible without opening the main roll-top compartment, while removable, contoured aluminium stays and a V-Pull hip belt add structure and support for heavier loads. Wider, naturally curved shoulder straps and adjustable roll-top compression straps round out the carry system. Suits thru hikes, multi-day trips and long-distance trails where low pack weight and genuine weather protection both matter.
Features
- Dyneema® Woven Composite 3.9 main body fabric — puncture and abrasion-resistant, with internal seam taping.
- 100D Dyneema® Gridstop reinforcement in high-wear zones.
- Dual-entry Dyneema® Stretch Mesh front pocket for quick-access, on-the-move storage.
- Large side bottle pockets for one-handed access to water and other essentials.
- Bottom stash pocket for wet or frequently used gear.
- Two removable, contoured aluminium stays for structure and load transfer.
- Removable hip belt with V-Pull cinch system and cushioned padding for heavier loads.
- Roll-top closure with removable, adjustable compression straps for volume control and securing trekking poles or oversized bottles.
- Low-profile, sewn-in daisy chains (vertical and horizontal) for external gear attachment.
- Wider, naturally curved shoulder straps for comfort under load.
- Five torso-fit sizes (XS-Tall) to dial in the carry.
- Rated to carry up to 18kg (40lb).
Specifications
| Weight | 773.9g (27.3oz), size Medium average — will vary slightly by torso size |
| Volume | 40L total, including 9L combined external pocket volume (front, side and bottom pockets) |
| Torso Fit Range | XS (under 38cm / 15in), S (38-43cm / 15-17in), M (43-48cm / 17-19in), L (48-53cm / 19-21in), Tall (over 53cm / 21in+) |
| Materials | Dyneema® Woven Composite 3.9 (main body), 100D Dyneema® Gridstop (reinforcement), Dyneema® Stretch Mesh (pockets) |
| Frame Type | Two removable, contoured aluminium stays |
| Access Style | Roll-top, adjustable volume |
| Pockets/Compartments | 1 Main Compartment, 1 Dual-Entry Front Stretch Mesh Pocket, 2 Side Bottle Pockets, 1 Bottom Stash Pocket (9L combined external pocket volume) |
| Max Load | 18kg (40lb) |
| Colour | Black, White |
The standard local delivery time from our store in Melbourne for orders placed before noon is 2–7 business days via Australia Post standard delivery. Express Post is also available. Please see our Shipping page for more details. International Orders are subject to flight availability.
If you'd like to know availability and delivery times for a specific item please contact us and we will get back to you asap.
