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HMG 4400 Southwest

Volume: 70L | Load capacity: up to 27kg | Weight: from 1054g

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HMG 4400 Southwest - designed for remote, multi-sport trips to inhospitable regions, where resupplies are infrequent. Made from 100% waterproof Dyneema® Composite Fabrics (formerly Cuben Fiber) and with additional elastic frame sheet support for extra load carrying capacity, this ultralight pack is highly durable. Further weatherproof your kit by using our Stuff Sacks. 


Body: 150D Dyneema®/Poly hybrid
Bottom: Double reinforced 150D Dyneema®/Poly hybrid
External Pockets: Dyneema® Hardline


Small: 1054g | 2.32 lbs | 37.18 oz
Medium: 1087g | 2.40 lbs | 38.34 oz
Large: 1134g | 2.50 lbs | 40.00 oz
Tall: 1155g | 2.55 lbs | 40.74 oz


  • Three external, solid Dyneema® Hardline pockets
  • Removable, contoured aluminum stays
  • Dyneema® Hardline shoulder straps with 3/8” closed cell foam and spacer mesh
  • Internal plastic frame sheet for added back panel support
  • 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

  • Dyneema® Hardline dual-density hip belt with 1/8” closed cell rigid foam, 1/4” closed cell foam and spacer mesh
  • Dyneema® Hardline zippered pockets on hip belt with #5 YKK zipper
  • Adjustable sternum strap with self-tensioning elastic
  • Ice Axe loop
  • Hydro port and internal mesh hydro sleeve
  • Four exterior triglide buckles for optional pack accessory straps
  • Proprietary seam sealing on all side seams and behind all sewn-on pack features

up to 27kg (60 lbs)

Interior: 70L (4400 cu. in.)
External: 9.8L (600 cu. in.)
Center pocket: 300 cu. in.
Side pockets: 150 cu. in.

Top Circumference: 45” (114.3cm)
Bottom Circumference: 37.5” (95.3)
Height (fully unrolled): 38.5” (97.8cm)
Back Width: 10.5” (26.7cm)

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 Fabrics with tape stitch lines. When used with ultralight DCF 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
Weight1054 g
Warranty2 years
Made inUSA
Size chart

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

  • 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.

    • Small (15.0” - 17.0” torso) -> 38cm - 43,18cm
    • Medium (17.0” - 19.0” torso) ->  43,18cm - 48,26cm
    • Large (19.0” - 21.0” torso) -> 48,26cm - 53,34cm
    • Tall (21.0”+ torso)  -> 53,34cm

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

B Kamil

okt 30, 2018
Tento batoh splna vsetky moje predstavy o dokonalom batohu. Nehovoriac a vysoko kvalitnom materiale a spracovani. Batoh ma vyhodu hroneho rolovacieho zatvarania takze pokial potrebujete mat napriklad 50L batoh zrolujete trochu viac, podla potreby. S tymto 70L batohom sa nemusite bat ze nebudete mat dostatok miesta na veci. Uz si len strazit vahu :-D. Batoh ma jednoduchy chrbtovy system a velmi dobre sedi na chrbte a novy system bedroveho pasa ma po bokoch naozaj priestranne vrecka, ktore su riesene tak ze nekopiruju obvod tela a tym padom pri zatiahnuti bedroveho pasa vam neohne do obluka vsetko dlhsie co vo vreckach mate. Bocne vrecka na napriklad flase na vodu su dostatocne priestranne a vojde sa tam 2L flasa s vodou a vedla nej este aj napriklad 0,7L nalgenka bez toho aby vam flasa vydula obluk do vnutra batohu cim by uberala z priestoru v hlavnej casi batoha. Predne vrecko je priestranne kam vlozim hrniec, pohar, nepremokavu bundu a kopec dalsich veci. Za mna jedinecny batoh, ktory sa jednoducho neda nedoporucit.
S Marco

aug 17, 2018
Got the HMG 4400 Southwest this week (super fast delivery to Finland:). Best buy in years! Very well made and very comfortable. It has all I need and nothing more! :)
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