Unbound 40



New model designed for hikers looking to walk lighter without stopping. With an internal frame, made of Dyneema and sealed seams, it ensures complete waterproofness. It has several accessible pockets and sufficient capacity for multi-day treks.

✔ Free shipping EUROPE over 150€ (+ Info)

✔ Free Returns

✔ Questions? Call us +34 634052511

✔ Receive it at home on Friday 19 July

Hiking Backpack

The Unbound 40 is a hiking backpack made in Maine (United States) by Hyperlite Mountain Gear. It is very similar to the Southwest but with more accessible pockets, ideal for non-stop walking for extended periods.

When to Use It

It’s a model that forces you to carry only the essentials. With a main volume of 40 liters plus 9 liters in additional pockets, it provides just the right space for an overnight getaway or multi-day treks.

It can comfortably carry up to 18 kg, and thanks to its fabric and fully sealed seams, it is completely waterproof. Thus, it eliminates the need for an additional backpack cover.

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The front pocket, along with the spacious side pockets and the expandable bottom pocket, ensures everything you need is within reach, even on the move. Additionally, the top is rollable, allowing you to adjust the load as you go. You can even grab a jacket, a mat, or ropes.

Another difference is that it uses only one removable support to transfer weight to the lumbar belt instead of a full frame. The removable belt ensures the load stays stable and enhances carrying comfort.

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Made of Dyneema Composite Hybrid

The Unbound hiking backpack uses a hybrid fabric made of Dyneema and polyester, known for its durability and strength (DHC). Made with a 50 denier DHC version and 150 denier for the base to withstand more wear and tear.

Dyneema is a waterproof fabric and does not absorb water like other UL fabrics. This, along with the sealed seams, could say that the backpack is practically waterproof.


  • Color white.
  • Maximum load 18kg.
  • Volume: 49L in total: 40L interior + 9L for external pockets.
  • Aluminum back frame.
  • Top closure by rolling.
  • Support for ice axes/poles.

Size Charts

Size (measure the length of your back)

M 42 – 48 cm
L 48 – 54 cm

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Reviews and Ratings

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