Updated
Design
Hyperlite Mountain Gear Packs Unbound - New - view front
Hyperlite Mountain Gear Packs Unbound - New
Hyperlite Mountain Gear Packs Unbound - New
Hyperlite Mountain Gear Packs Unbound - New view back
Hyperlite Mountain Gear Packs Unbound - New
Hyperlite Mountain Gear Packs Unbound - New
Hyperlite Mountain Gear Packs Unbound - New
Hyperlite Mountain Gear Packs Unbound - New
Hyperlite Mountain Gear Packs Unbound - New
Hyperlite Mountain Gear Packs Unbound - New
Hyperlite Mountain Gear Packs Unbound - New
Hyperlite Mountain Gear Packs Unbound - New
Hyperlite Mountain Gear Packs Unbound - New
Hyperlite Mountain Gear Packs Unbound - New
Hyperlite Mountain Gear Packs Unbound - New
Hyperlite Mountain Gear Packs Unbound - New
Hyperlite Mountain Gear Packs Unbound - New
Hyperlite Mountain Gear Packs Unbound - New
Hyperlite Mountain Gear Packs Unbound - New
Hyperlite Mountain Gear Packs Unbound - New
Hyperlite Mountain Gear Packs Unbound - New
Hyperlite Mountain Gear Packs Unbound - New
Hyperlite Mountain Gear Packs Unbound - New
Hyperlite Mountain Gear Packs Unbound - New
Hyperlite Mountain Gear Packs Unbound - New
Hyperlite Mountain Gear Packs Unbound - New
Hyperlite Mountain Gear Packs Unbound - New
Hyperlite Mountain Gear Packs Unbound - New
Hyperlite Mountain Gear Packs Unbound - New
Hyperlite Mountain Gear Packs Unbound - New
Hyperlite Mountain Gear Packs Unbound - New
Hyperlite Mountain Gear Packs Unbound - New
Hyperlite Mountain Gear Packs Unbound - New
Hyperlite Mountain Gear Packs Unbound - New
Hyperlite Mountain Gear Packs Unbound - New
Hyperlite Mountain Gear Packs Unbound - New
Hyperlite Mountain Gear Packs Unbound - New
Hyperlite Mountain Gear Packs Unbound - New
Hyperlite Mountain Gear Packs Unbound - New
Hyperlite Mountain Gear Packs Unbound - New
Hyperlite Mountain Gear Packs Unbound - New
Hyperlite Mountain Gear Packs Unbound - New
Hyperlite Mountain Gear Packs Unbound - New
Hyperlite Mountain Gear Packs Unbound - New

Unbound

Sale price$395.00
4.7
Rated 4.7 out of 5 stars
57 Reviews

"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.

Weight: 26.1 oz
Volume
Torso Length
Color:Grey
Recommended Add Ons:
Hyperlite Mountain Gear Accessories White Shoulder Pocket
Shoulder Pocket - White
One more great way to keep the tools you need for a successful day within reach.
+ $60.00
Hyperlite Mountain Gear Accessories Inside Pack Pocket
Inside Pack Pocket
Keep your smaller essentials like keys, ID, or wallet stowed away in one place with in the Inside Pack Pocket.
+ $25.00
Front view of two different sizes of the Hyperlite Mountain Gear Pods designed with a clamshell design
Pods - 9L (Fits Up To 40L/55L Packs)
Pods bring organizational ingenuity to the insides of our popular packs.
+ $60.00
Availability: In stock, ready to ship

Shipping & Fulfillment

We're committed to getting our adventure-ready gear from our headquarters in Maine straight to you.

Orders in the USA
Enjoy free shipping on all orders over $300. For all other orders, you can select your preferred shipping method during checkout.

International Orders
We ship worldwide! To make it easy, all available shipping options, delivery estimates, duties, and taxes for your location are calculated and displayed at checkout.

Our Process
The moment you place your order, we get to work preparing it for shipment. You’ll receive an email with tracking information as soon as your gear is on its way, so you can follow its journey.

For complete details, please review our full shipping policy.

Shipping & Fulfillment

We're committed to getting our adventure-ready gear from our headquarters in Maine straight to you.

Orders in the USA
Enjoy free shipping on all orders over $300. For all other orders, you can select your preferred shipping method during checkout.

International Orders
We ship worldwide! To make it easy, all available shipping options, delivery estimates, duties, and taxes for your location are calculated and displayed at checkout.

Our Process
The moment you place your order, we get to work preparing it for shipment. You’ll receive an email with tracking information as soon as your gear is on its way, so you can follow its journey.

For complete details, please review our full shipping policy.

No-Hassle Returns & Exchanges

Your satisfaction is our goal. If you're not happy with your purchase, our process is simple and uncomplicated.

You have 30 days from the purchase date to return any new, unused item for a full refund or exchange.

Even if you've already tried the gear out on an adventure, we want to help. Reach out to our customer service team, and we will see what we can do to find a solution that works for you.

To start a return or see the full details, visit our return policy page.

No-Hassle Returns & Exchanges

Your satisfaction is our goal. If you're not happy with your purchase, our process is simple and uncomplicated.

You have 30 days from the purchase date to return any new, unused item for a full refund or exchange.

Even if you've already tried the gear out on an adventure, we want to help. Reach out to our customer service team, and we will see what we can do to find a solution that works for you.

To start a return or see the full details, visit our return policy page.

Our Commitment to You

Your confidence in our gear is what drives us. When you choose Hyperlite Mountain Gear, you're not just buying a product; you're gaining a partner for your adventures.

We will always guarantee our products against manufacturing defects. Should an issue arise, we'll work with you to find the best solution.

Accidents happen on the trail, and we're here to help. Contact our dedicated support team to discuss our expert repair services for any other damages.

For complete details, you can review our full warranty policy.

Our Commitment to You

Your confidence in our gear is what drives us. When you choose Hyperlite Mountain Gear, you're not just buying a product; you're gaining a partner for your adventures.

We will always guarantee our products against manufacturing defects. Should an issue arise, we'll work with you to find the best solution.

Accidents happen on the trail, and we're here to help. Contact our dedicated support team to discuss our expert repair services for any other damages.

For complete details, you can review our full warranty policy.

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

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.

Product Walkthrough Video | Unbound

WHY CHOOSE THE UNBOUND?

Hyperlite Mountain Gear Packs Unbound - New

NO SPACE WASTED

Increase your efficiency with easily-accessible side bottle pockets, dual-entry front pocket, and bottom stash pocket.

Hyperlite Mountain Gear Packs Unbound - New

MODULARITY FOR ANY NEEDS

The removable side compression shockcord system with an adjustable hook to secure trekking poles or larger water bottle.

Hyperlite Mountain Gear Packs Unbound - New

HELP AT THE HIPS

Removable Hipbelt for better load support when needed with heavier carry weights and an easy V-Pull-style cinch system.

4.7
Rated 4.7 out of 5 stars
Based on 57 reviews
95%would recommend this product
57 reviews
  • Dominic M.
    Verified Buyer
    Age Range 35 - 44
    What activities did you use this product for? Thru Hiking
    What size pack did you order? Small
    3 weeks ago
    Age Range 35 - 44
    What activities did you use this product for? Thru Hiking
    What size pack did you order? Small
    Rated 5 out of 5 stars
    Best bags

    Very good bag !

  • Justin M.
    Verified Buyer
    Age Range 35 - 44
    What activities did you use this product for? Backpacking
    What size pack did you order? Medium
    1 month ago
    Age Range 35 - 44
    What activities did you use this product for? Backpacking
    What size pack did you order? Medium
    Rated 5 out of 5 stars
    Best pack ever!

    The material is very durable. I especially love the bottom pocket for my camp sandals. Smart design in all features.

  • Mark C.
    Verified Buyer
    Age Range 45 - 54
    What activities did you use this product for? Backpacking, Day Hiking, Thru Hiking, Other
    What size pack did you order? Large
    1 month ago
    Age Range 45 - 54
    What activities did you use this product for? Backpacking, Day Hiking, Thru Hiking, Other
    What size pack did you order? Large
    Rated 5 out of 5 stars
    Easy Pack for long and short trips

    This is an exceptional backpack. The size, weight and flexibility of use is wonderful. I love that the hip belt is removable and able to be exchanged. It is very comfortable.

  • Metro O. T. M.
    Verified Reviewer
    Age Range 45 - 54
    What activities did you use this product for? Thru Hiking
    What size pack did you order? Large
    2 months ago
    Age Range 45 - 54
    What activities did you use this product for? Thru Hiking
    What size pack did you order? Large
    Rated 5 out of 5 stars
    Excellent Pack For An AT Thru Hike!

    FIVE STARS! Super light, plenty of space for my gear, no water leaks, and has large side pockets to haul extra water in the dry summer months. Excellent pack for an AT Thru Hike! @metroonthemove

  • Colin G.
    Verified Reviewer
    Age Range 45 - 54
    What activities did you use this product for? Day Hiking, Backpacking
    What size pack did you order? Large
    3 months ago
    Age Range 45 - 54
    What activities did you use this product for? Day Hiking, Backpacking
    What size pack did you order? Large
    Rated 5 out of 5 stars
    Happy user! European detailed feedback.

    I’m a weekend hiker, living in the Alps, enjoying week-long treks in full autonomy (tent and food) at occasion. 1m85, 85Kg.

    We have no way in Europe to put our hands on HMG gear before purchasing, and I’ve been hesitating a lot.

    I’m trying to help with a list of my initial concerns and my user feedback.

    - Noisy? Yes, rolling the collar is noisier than with common backpacks because the material is more rigid. To me the sound is comparable to the dry bags used for canoeing or to carry diving gear, with a little bit more crackle. It’s not loud or horrible like with some plastic bags.

    - Thin and narrow shoulder straps? Yes, but it works. I don’t know what that cushioning really is. It is comfortable and just makes you wonder why the shoulder straps are sometimes so large and thick. Less covering your chest is actually not bad: It gives a sense of freedom when carrying and the additional uncovered parts are welcome on warmer days.

    - No load lifters? I was very skeptical about this one. With other packs, I need to tension the load lifters so I get the pack closer to my back and feel the load transfer pushing vertically down to my hips. Here the pack is naturally sitting vertically on my back, there is no pullback effect at all. It gives you the sensation you actually have load lifters. I don’t know how this is achieved, but it’s impressive!

    - Small hip belt pockets? They are not the biggest, but they are large enough for your smartphone, wallet, and snacks. To be noted that they…