Front view of the Hyperlite Mountain Gear Junction 40 in White
Hyperlite Mountain Gear Packs Junction
Side view of the Hyperlite Mountain Gear Junction 40 in White showcasing the mesh center exterior pocket & Dyneema® fabric side pockets
Front view of the Hyperlite Mountain Gear Junction 40 in Black
Side view of the Hyperlite Mountain Gear Junction 40 in Black showcasing the mesh center exterior pocket & Dyneema® fabric side pockets with compression straps
Side view of the Hyperlite Mountain Gear Junction 40 in White showcasing the mesh center exterior pocket & Dyneema® fabric side pockets with compression straps
Side view of the Hyperlite Mountain Gear Junction 40 in Black showcasing the mesh center exterior pocket & Dyneema® fabric side pockets
Back view of the Hyperlite Mountain Gear Junction 40 in White with integrated 1/4” foam back panel pad
Back view of the Hyperlite Mountain Gear Junction 40 in Black with integrated 1/4” foam back panel pad
Back view of a 5'1" Model wearing the Hyperlite Mountain Gear Junction 40 in Black
Angled view of a 5'1" Model wearing the Hyperlite Mountain Gear Junction 40 in Black
Front View of a model wearing the Hyperlite Mountain Gear Junction 40 in Black showcasing the Dyneema® hip belt and shoulder straps
Front View of a model wearing the Hyperlite Mountain Gear Junction 40 in White showcasing the Dyneema® hip belt and shoulder straps
Angled view of a model wearing the Hyperlite Mountain Gear Junction 40 in White showcasing the exterior mesh center pocket and compression straps
Back view of a person modeling the Hyperlite Mountain Gear Junction 40 in White fully packed and using the roll top closure system
Close up of the shoulder straps made of hardline with Dyneema® with 3/8” closed cell foam and spacer mesh on the Hyperlite Mountain Gear Junction 40
Close up of one of the solid-panel Hardline with Dyneema® side pockets with a phone being stashed away on the Hyperlite Mountain Gear Junction 40
Hyperlite Mountain Gear Junction 40's exterior mesh pocket used to dry out equipment on the move
Close up of the Hyperlite Mountain Gear Junction 40's hydration system with an external tube running into the pack towards the hydration bladder
Overhead shot of the inside of the Hyperlite Mountain Gear Junction 40 showcasing the Internal 8" x 14” mesh sleeve for hydration bladder
Top view of the Hyperlite Mountain Gear Junction 40 in White showcasing the roll top closure system with compression straps
Close up of the Hyperlite Mountain Gear Badge Logo on the Dyneema® 50-denier DCH fabric of the Junction 40 in White
Front view of Hyperlite Mountain Gear's Junction 55 Pack in Black
Front view of Hyperlite Mountain Gear's Junction 55 Pack in White
Left side view of Hyperlite Mountain Gear's Junction 55 Pack in Black
Left side view of Hyperlite Mountain Gear's Junction 55 Pack in White
Right side view of Hyperlite Mountain Gear's Junction 55 Pack in Black
Right side view of Hyperlite Mountain Gear's Junction 55 Pack in White
Back view of Hyperlite Mountain Gear's Junction 55 Pack in White showing buckles and hip belt
Back view of Hyperlite Mountain Gear's Junction 55 Pack  in Black showing buckles and hip belt
Interior view of Hyperlite Mountain Gear Junction 55 Pack in White showing inside mesh

Junction

4.8
Rated 4.8 out of 5 stars
346 Reviews
Volume
Torso Length
Color:White
Weight: 28.7 oz
Availability: In stock, ready to ship
Sale price$349.00

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

One of our original packs and a year-after-year best-seller, the Junction pack combines lightweight, waterproof Dyneema® composite fabric with a proven, durable design, making it the ideal companion for any adventures, from weekend trips to thru hikes. This highly versatile pack helps decrease weight, increase comfort, and boost confidence in rugged terrain and changing weather.

KEY FEATURES:
  • The mesh center pocket offers visibility and drying for gear, while the solid-fabric sides provide abrasion protection. 
  • Side and over-the-top compression straps secure external gear for stability
  • Hydroport with an internal mesh sleeve ensures easy access to water for hydration on the go.

Product Walkthrough Video | Junction 40

WHY CHOOSE THE JUNCTION?

A white triangle logo on a black background.

SOLID & VERSATILE

One center mesh pocket for easy access and drying out wet clothing. Two additional side pockets for storing and protecting your gear

A white triangle logo on a black background.

WATERPROOF MATERIALS

Pair with our Stuff Sacks for a buttoned up, nearly waterproof kit

A white triangle logo on a black background.

EXTERNAL POCKETS

One external center mesh pocket with two solid-panel Hardline with Dyneema® pockets on the sides – dry gear faster with the middle pocket, protect or hide items in the sides

4.8
Rated 4.8 out of 5 stars
Based on 346 reviews
Total 5 star reviews: 296 Total 4 star reviews: 38 Total 3 star reviews: 5 Total 2 star reviews: 5 Total 1 star reviews: 2
97%would recommend these products
346 reviews
  • Michele La r.
    Verified Buyer
    Age Range 45 - 54
    What activities did you use this product for? Backpacking, Day Hiking, Alpine/Ice Climbing
    What size pack did you order? Medium
    2 days ago
    Age Range 45 - 54
    What activities did you use this product for? Backpacking, Day Hiking, Alpine/Ice Climbing
    What size pack did you order? Medium
    Reviewing
    Junction
    Rated 5 out of 5 stars
    Minimalist, rugged perfection

    I own SO MANY backpacks including many HMG packs in this series and i find them to be my favorites if they fit you they are basically perfect. Well built, carry weight well, everything is exactly where it should be HMG have really perfected this design and it shows. Basically waterproof and they hold up extremely well I’m stilll using my original Southwest purchased more than 10 years ago or so most of all and it’s still going extemely strong. This one is a great all-around design and great for beach/wet environs anywhere you may have gear to dry out as you hike (or climb). I’m 6’1 with a 17-18 torso and a size M is perfect

  • Simon M.
    Verified Buyer
    Age Range 45 - 54
    What activities did you use this product for? Thru Hiking
    What size pack did you order? Large
    4 weeks ago
    Age Range 45 - 54
    What activities did you use this product for? Thru Hiking
    What size pack did you order? Large
    Reviewing
    Junction
    Rated 5 out of 5 stars
    The best

    An absolute masterpiece.

  • Jeffrey W.
    Verified Buyer
    Age Range 55 - 64
    What activities did you use this product for? Backpacking, Day Hiking
    What size pack did you order? Medium
    2 months ago
    Age Range 55 - 64
    What activities did you use this product for? Backpacking, Day Hiking
    What size pack did you order? Medium
    Reviewing
    Junction
    Rated 5 out of 5 stars
    Great functionality and fit

    Outstanding pack. Weight, layout, ease of use all spoton as was the fit.

  • Teddy
    Age Range 45 - 54
    What activities did you use this product for? Backpacking
    What size pack did you order? Medium
    5 months ago
    Age Range 45 - 54
    What activities did you use this product for? Backpacking
    What size pack did you order? Medium
    Reviewing
    Junction
    Rated 5 out of 5 stars
    1st lightweight backpack

    I have the junction 40 in black, this is my 3rd year owning it. I really enjoy everything about this pack. Sometimes in winter I wish I bought the 55 liter because you can roll it down to the 40 liter, but have that extra room for winter layers, or a longer food carry. I have been through rain and snow and never had any water leak in. I also use dry bags( hyperlite dry bags) for down and clothes. It’s a little expensive but you get what you pay for with this one. After 3 years there is a little wear at bottom near hip belt but that’s it. I also use a compactor bag inside. I can probably fit 4 or so days of food with all my other gear.

  • Doug J.
    Verified Buyer
    Age Range 55 - 64
    What activities did you use this product for? Backpacking, Skiing/Snowboarding
    What size pack did you order? Large
    8 months ago
    Age Range 55 - 64
    What activities did you use this product for? Backpacking, Skiing/Snowboarding
    What size pack did you order? Large
    Reviewing
    Junction 55
    Rated 5 out of 5 stars
    Enjoying the pack!

    The Junction 55 is a great backpack. I won't typically use it for over 30 lbs, but under that it has proven to be very comfortable. Above 30 lbs, it seems to pull a bit heavy in the shoulders, neck. I'm between 5' 9" and 5' 10" and have a 19" torso and went with the large size which seems perfect. I've had a bit of tearing of the mesh in the back, so it needs to be handled kind of carefully.