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Ships within 48 hours · Estimated delivery Jul 17 - Jul 22
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Description
hyperlite mountain gear junction 40 Hyperlite Mountain Gear Junction 40L Backpack White, MShips in 1 2 business days Based in Biddeford, ME Est. 2010 Hyperlite Mountain Gear's most versatile, long trail pack The Junction 40 pack is a compact companion thats at home in any environment, whether youve got your setup streamlined, youre just heading out for a weekend, or youre section hiking in areas where supplies are easy to find. It's an ideal size when frequent resupply points are available. The main body is now built with a fully woven
Ships in 1-2 business days | Based in Biddeford, ME | Est. 2010
Hyperlite Mountain Gear's most versatile, long trail pack
The Junction 40 pack is a compact companion that’s at home in any environment, whether you’ve got your setup streamlined, you’re just heading out for a weekend, or you’re section hiking in areas where supplies are easy to find. It's an ideal size when frequent resupply points are available. The main body is now built with a fully woven Dyneema® 200-denier fabric that offers more durability with the same signature lightweight and 100% waterproof qualities that people love about other Dyneema® fabrics. With two solid-fabric side pockets that add protection from whatever’s inside and a center mesh pocket for visibility and drying wet gear, the Junction is a comfortable pack that delivers premium performance wherever you’re headed.
Features:
-
Internal frame with two removable aluminum stays
- Padded hip belt
- Made with exclusive Dyneema® Woven Composite 3.9: this fabric provides exceptional abrasion resistance, feels better to touch, and reduces crinkling in cold conditions
- Roll-top closure system with vertical compression straps that allows you to adjust the pack's volume, keeping the load compact, stable, and protected from the weather
- Top Y-strap provides compression and top-of-pack storage for gear
- Integrated 1/4" foam back panel adds cushioning and support for a more comfortable carry
- Zippered hip belt pockets offer easy access to essentials
- Two removable contoured aluminum stays offer support and help distribute the load
- Seam taped on all vertical side seams and behind sewn-on pack features enhances water resistance, keeping your gear dry
- Sternum strap allows for easy adjustments along shoulder strap daisy chains
- Shoulder straps with frequent bartacks for increased sternum strap adjustment options allow for a customized fit
- Shoulder straps feature an adjusted shape for a more natural curve around your neck, providing enhanced comfort
- Removable side compression straps for versatile gear attachment options
- Streamlined hydration system featuring a simple bladder hang loop and repositioned hydroport
- Sewn-through back panel construction creates a curved shape that locks the interior panel in place, providing a more comfortable and durable fit
_______________________________________________
Specs
Volume: 40L
- External Pockets: 11.5L
External Pockets: 5
Recommended Maximum Load Capacity: Up to 40 lbs | 18kg
Sizing:
- Small: 15”-17” torso | 38cm - 43cm
- Medium: 17”-19” torso | 43cm - 48.3cm
- Large: 19”-21” torso | 48.3cm - 53.3cm
- Tall: 21"+ torso | 53.3cm+
*See our backpack sizing page to learn how to fit a backpack
Weight: 29.4oz | 833g (medium)
Dimensions: 31.5"H (fully unrolled) x 11"W | 80cm x 28cm
- Circumference (Top/Bottom): 37.5” / 33.5” | 95.3cm / 85.1cm
Materials:
- Body: Dyneema® Woven Composite 3.9
-
External Pockets: Large Hole Mesh
- Shoulder Straps & Hipbelt: Hardline with Dyneema®, Closed cell foam, Spacer mesh
- PFAS-Free
Made in Mexico
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 20 reviews
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Product Reviews
★★★★★ 5
This mattress cover is great! Well worth your money
Size: Twin XL, Style: 1 Green
This mattress cover is so comfortable. I am scheduled for back surgery in a week so when I find something I can sleep on and call it comfortable you best believe it is! It fits well, it’s pretty and it’s very fluffy. Seems to be made very well. I am confident that I’ll get a lot of wear out of it.
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Reviewed in the United States on May 29, 2026
★★★★★ 5
Very Comfortable - Love this!
Size: Full, Style: 1 Green
So far, so good! I am going on my first night trying this mattress topper out. It feels very comfortable and definitely is fluffy, but not too fluffy. I did not "fluff it out" or put it in the dryer to fluff it out quicker, so perhaps it still needs some time to fluff out some more. It was very easy to place on my mattress. I didn't have to fight with it as I normally would when fitting a sheet to my mattress. I love that it stretches over the sides of the mattress to hold it in place. The bamboo truly gives a cooler effect, which will be very helpful in the summer time. I used a microfiber mattress topper prior to ordering this topper. So far, the comparison is that this one appears to be well made and durable, unlike the microfiber one I had before that changes color as it gets old and dirty and is impossible to clean. The old one actually ripped and would constantly move. I am excited to see how well this one holds up over time. I had no trouble placing a fitted sheet over this mattress topper. I love that this one is machine washable and is able to be placed in the drier. It feels very nice on my legs and is comfortable for my back as well. The padding doesn't feel thick or bulky but definitely adds a softness that is super comfortable. It's too soon to tell if it's water resistant as I haven't tested that feature out yet. I placed it over an old, springy mattress and it truly feels like I have a whole new mattress. Time will tell how well this product does the job and I will update this review if I end up having any issues with it.
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Reviewed in the United States on May 25, 2026
★★★★★ 5
IT'S LIKE SLEEPING ON A CLOUD!!
Size: King, Style: 3 White
OMG I AM SLEEPING ON A CLOUD!!! THIS! Life changing!!! We went on a Royal cruise and asked for a mattress topper. When we got home I just had to find one for our bed because I sometimes find it to be too hard. Along comes THIS topper! The very first night it was on the bed I slept the entire night without tossing / turning which I NEVER do! Along with every night since! It fits perfectly on our King bed and no issues with the sheets. It does have a chemical smell when you first open the bag - but I put it in the dryer on air only and the smell dissipated in about 20 minutes. No smell at all by the time we went to bed. it appears to be washable. It's very soft so there isn't really any back support. Just adds comfort to the bed. It is bamboo and really as soft as a cloud! Even my husband got into bed the first night and said AHHHHHHH SOFFT! Super bright white appearance. Not sure if it is water resistant. We added it on top of the mattress protector without any issues. All of the FOAM mattress toppers are terrible! They end up getting really heavy, you can't wash them, they get lumpy, and you end up sweating like crazy on them! THIS - nice and cool! And my hubby runs hot!! I call him the heat miser! No issues! We're both very very pleased!! If you're even thinking about purchasing - ADD IT TO YOUR CART NOW!
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Reviewed in the United States on April 22, 2026
★★★★★ 4
Not like the pictures but well worth the money
Size: Queen, Style: 1 Green
4 stars because it is not nearly as padded as the descriptions and images make it seem. The filling flattens easily and doesn’t provide any support.
That being said it does make my bed more comfortable and soft and has improved my sleep quality. I have a 12 in soft/medium firm memory foam mattress that was wonderful for the last +2 years till my back surgery ~6 months ago. Since then my joints ached when trying to sleep and when waking, my back would be all out of place and achey, and I was untested. Since buying this topper these issues have improved by 80% or more. It is a great addition to my bed and I don’t regret buying it.
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Reviewed in the United States on May 18, 2026
★★★★★ 5
OMGAAAAAWD!!! HEAVEN!
Size: Full, Style: 1 Green, Size: Full, Style: 1 Green
All I can say is OMGAWD!!! Thank You~!~!! We got a new mattress after the previous "The Cloud" Serta pillow top (I'll never have another one) lasted for less than 8 years and I totally despised not being able to flip it models failed.. The new model is also a hybrid mattress, but is flippable and was just a bit too firm. I was feeling progressively more and more uncomfortable as the nights wore on, and with my serious back problems.. this just wouldn't do.. So I began searching "Our Beloved Amazon - heh" for an alternative, and after quite some time and research finally landed on this wonderful topper. It's like sleeping on top of well stuffed Ida Down on top of piles of silk. So very comfortable and my back pain is virtually completely gone now -such a relief! Be sure you follow the instructions on care and initial setup. You Do have to let it fluff out because of the vacuum packing (it wasn't really heavy btw). Mine decompacted fine, but I still want to run it through the dryer when we next venture to the laundromat. Shake it a little here and there when you take it out and at least let it sit for a few hours. It was just as easy to put on the bed as a regular mattress protector, and I also put my regular protector on top of it for added security and waterproofing. The materials feel like they are of good quality.. Viscose is also called Rayon and can be made from a number of different materials, so take good care of it and follow the washing instructions carefully. Delicate only, and cool only, and use only a horizontal washer that does not have a central agitator or you will tear it up. Only dry on low temperatures (preferably in a very larger laundromat dryer so it has plenty of room to loosely toss about. Drying it in the sun is alright as well, but it won't fluff like you want it to. I recommend using a waterproof and bug proof protector on top of this just to be sure you take care of it properly.
Now I want to buy one for both my Mother and my Aunt HAHAHHA! TG it is in my price range.. barely.
(Addendum: I have run it through the big dryer at the laundromat.. The dryer was cold so I gave it a quick warm on medium for anout 2 minutes and then tumbled on low for quite some time. The topper was fully ready in about 25 minutes, but I decided to elt it go on low while I did the rest of my laundry. It did perfectly and is just like the manufacturer photos.. I was so tired when I arrived home that I just flaked out on top of everything.. It was so comfortable that I was out liek a light in very short order and slept beautifully. I can attest that if you use this below your sheets instead of covering it with an additional mattress protector, that it does have better cooling effect. I will of course keep my waterproof/bugproof protector on top just for safety. The cat is nutz about the new topper as well.)
Namaste.
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Reviewed in the United States on August 6, 2025
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