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HMG 3400 Junction

55 liters | from 906g | Load up to 18kg | 50D/150D Dyneema®


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HMG 3400 Junction - is built upon the time-tested, ultralight Windrider and Southwest, with a best of both worlds to give you ultimate versatility. It's a roll-top ultralight backpack built with 100% waterproof Dyneema® Composite Fabrics with different kind of external pockets.

The 3400 Junction is identical to Hyperlite’s 3400 Southwest and 3400 Windrider backpacks with the exception of its external pockets. It features two solid side pockets constructed of Dyneema® Hardline to provide an extra durability when hiking off-trail, and an external center mesh pocket to give visibility to the contents and to dry out damp gear.

The 3400 Junction has a large main compartment with an internal hydration system sleeve, side water bottle pockets, a mesh front pocket, and large hip belt pockets. The advantage of a roll-top pack is that you can roll down the extension collar to reduce its volume when it’s not needed and if you can’t decide between the 2400 or 3400 packs. 

The 3400 (55L) volume size is ideal for weekend, section, or thru hikes where resupply points are less frequent, or when trip needs demand flexibility for extra equipment. When the extra volume is not in use, the 3400’s top can roll down enough to make the overall size of the pack similar to the 2400, but that additional space can come in pretty handy when you need it.

HMG 3400 Junction

906g | 2.00 lbs | 32.00 oz (White)
973g | 2.15 lbs | 34.32 oz (Black)
Weight may vary slightly by torso size.

Up to 18 kg | 40 lbs

Body: DCH50 (White)
Body: DCH150 (Black)
Bottom: DCH150
External Center Pocket: Mesh
External Side Pockets: Hardline with Dyneema®

Internal: 55L (3400 cu. in.)
External: 9.8L (600 cu. in.)
Center Pocket: 5L | 300 cu. in.
Side Pockets: 2.5L | 150 cu. in.

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
Hardline with Dyneema® zippered pockets on hip belt with #5 YKK zipper
Hardline with Dyneema® hip belt with 1/8” closed cell rigid foam, 1/4" closed cell foam and spacer mesh
Hardline with Dyneema® shoulder straps with 3/8” closed cell foam and spacer mesh
Adjustable sternum strap with self-tensioning elastic
Removable, contoured aluminum stays
1/4” foam back panel pad
Compression System
  • Roll-Top closure system with side compression straps for vertical compression
  • Side compression straps for horizontal compression
  • Top Y-strap compression -- Designed to secure gear
Proprietary seam sealing on all side seams and behind all sewn-on pack features
Bar tacked reinforcements
Hydro port and internal mesh hydro sleeve
Four exterior triglide buckles for optional pack accessory straps
Ice Axe loop

Top Circumference: 101.6cm | 40” 
Bottom Circumference: 85.1cm | 33.5”
Height (fully unrolled): 86.4cm | 34” 
Back Width: 26.7cm | 10.5” 

If you don't know which one would best meet your needs, here is a short comparison of HMG backpacks

Hyperlite Mountain Gear manufactures a line of ultralight backpacks designed for everything from a quick day trip to an extended expedition. HMG backpacks are made of 100% waterproof Dyneema Composite Fabric with tape stitch lines. When used with ultralight HMG Dyneema stuff sacks, their gear provides a rainproof system for your excursion. Combined with ultralight shelter systems, you will feel like you can fly. Cushioned shoulder straps and hip belts, padded lumbar support and shaped aluminum stays, provide a super-comfortable fit. HMG lightweight Dyneema packs have been specifically designed for backpacking, mountain climbing, and ice climbing, but are suitable for cycling, pack rafting, day hiking or just getting around town.

Data sheet
Weightfrom 906 g
Warranty2 years
Made inMexico
  • Tilt your head slightly forward to locate the bony bump at the base of your neck. (This is your 7th cervical (or C7) vertebra).

  • Using a flexible tape measure, have someone measure starting at that spot and running down along the curve of your spine.

  • 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.

  • 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.

Small38cm - 43cm15.0” - 17.0” 
Medium43cm - 48cm17.0” - 19.0” 
Large48cm - 53cm19.0” - 21.0”
Tall> 53cm> 21.0”

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.

HMG pack size

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