Front view of the Hyperlite Mountain Gear Unbound 40 in White with durable Dyneema® Stretch Mesh front pocket

Unbound

Rated 4.7 out of 5
Based on 130 reviews
Click to go to reviews
Volume
Torso Length
Color:White
Weight: 28.5 oz
Availability: SHIPS IN 1-2 WEEKS
Sale price$369.00

How to Choose a Pack Size

Your torso length, not your height, determines your pack size. We recommend the following to determine yours:

  1. Tilt your head slightly forward to locate the bony bump at the base of your neck. (This is your 7th cervical (or C7) vertebra).
  2. Using a flexible tape measure, have someone measure starting at that spot and running down along the curve of your spine.
  3. 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.
  4. 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.
    • Small (15.0” - 17.0” torso)
    • Medium (17.0” - 19.0” torso)
    • Large (19.0” - 21.0” torso)
    • Tall (21.0”+ torso)
  5. 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.

WATCH THE VIDEO

How to Choose a Pack Size

How to Choose a Pack Size

Your torso length, not your height, determines your pack size. We recommend the following to determine yours:

  1. Tilt your head slightly forward to locate the bony bump at the base of your neck. (This is your 7th cervical (or C7) vertebra).
  2. Using a flexible tape measure, have someone measure starting at that spot and running down along the curve of your spine.
  3. 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.
  4. 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.
    • Small (15.0” - 17.0” torso)
    • Medium (17.0” - 19.0” torso)
    • Large (19.0” - 21.0” torso)
    • Tall (21.0”+ torso)
  5. 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.

WATCH THE VIDEO

How to Choose a Pack Size

The Unbound is designed for the on-trail backpacker and all-day thru hiker, prioritizing mobile storage and easy accessibility while covering big miles. Built to enhance efficiency, this pack features the latest on-trail innovations to keep your gear within reach while you stay focused on the trail, maximizing your time on the move.

DESIGNED FOR:

Backpacking

KEY FEATURES:
  • Dual-entry stretch mesh front pockets ensure organized storage and quick access to gear.
  • Large, easy-to-reach side pockets keep water bottles or gear accessible on the go.
  • Exterior bottom pocket with dual entry provides quick access to snacks or trash storage.

Product Walkthrough Video | Unbound

WHY CHOOSE THE UNBOUND 40?

A white triangle logo on a black background.

ACCESSIBILITY ON THE MOVE

Large dual-entry front external 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

A white triangle logo on a black background.

MAKE IT YOUR OWN

Low-profile daisy chains allow countless ways to carry external items for different kinds of trips. Remove or add top-side compression straps depending on needs, or shock cord for oddly shaped gear

A white triangle logo on a black background.

COMPLETE SEAM TAPING

With the exterior binding, seam bulking is eliminated within the pack, allowing for more efficient taping and improved water resistance

average rating 4.7 out of 5
Based on 130 reviews
  • 5 Stars
    107 Reviews
  • 4 Stars
    14 Reviews
  • 3 Stars
    7 Reviews
  • 2 Stars
    1 Review
  • 1 Star
    1 Review
93% of reviewers would recommend this product to a friend
How was your pack fit?
Rated 0 on a scale of minus 2 to 2, where minus 2 is Too Small, 0 is Just Right and 2 is Too Big
Rate your level of experience in the backcountry.
Rated 4 out of 5
Customer photos and videos
Review postedabout 10 hours ago
Reviewed by Eric S.
Verified Buyer
Unbound
Reviewing
Unbound
Age Range
45 - 54
What activities did you use this product for?
  • Backpacking
  • Day Hiking
What size pack did you order?
Large
Rated 5 out of 5

Comfortable

I was looking for a lightweight pack with comfort. So far this has been great, it’s the only pack I can actually reach my water bottle. This pack is comfortable, and feature rich. I was worried about the comfort, because I use Osprey AG Atmos, but I won’t go back to Osprey. This in my opinion is a far better choice.

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How was your pack fit?
Rated 0 on a scale of minus 2 to 2, where minus 2 is Too Small, 0 is Just Right and 2 is Too Big
Rate your level of experience in the backcountry.
Rated 4 out of 5
Was this helpful?
Review posted21 days ago
Reviewed by Christopher S.
Verified Buyer
Unbound
Reviewing
Unbound
Rated 5 out of 5

Great Pack!

Climbed Mt Washington with one. Great pack. Comfortable, light, reliable, and functional!

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Review postedabout 1 month ago
Reviewed by Michael G.
Verified Buyer
Unbound
Reviewing
Unbound
Rated 5 out of 5

Super nice pack

Very nicely made

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Review posted3 months ago
Reviewed by Kim M.
Verified Buyer
Unbound
Reviewing
Unbound
Rated 5 out of 5

Unbound

Perfect

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Review posted3 months ago
Reviewed by Kory
Verified Reviewer
Unbound
Reviewing
Unbound
Rated 5 out of 5

Wonderland Trail Rockstar

I originally bought this to do the Wonderland Trail in last year and it was the perfect tool. I've used this up to 7 day backpacking trips (40L) and it's been great. Held up to rain, hail, snow, and kept everything inside dry during all of it. I live in CO, so since doing the Wonderland I've also taken it all over the Rockies and found it more durable than expected. At first I was worried I'd rip it as I'm not the easiest on my gear, but this has proven the perfect pack.

I heard someone say they didn't get the white because it shows dirt.... it does show dirt. But it's a backpack so I don't want it to look brand new and clean anyway.

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