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70 liters | from 1008.1g | Load up to 27kg | Dyneema® Woven Composite 3.9
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Hyperlite Mountain Gear Southwest 70L - is a purpose-built, ultralight pack made for demanding trips into rough, remote terrain—where your gear needs maximum protection and your backpack has to keep up. Evolved from the trusted Windrider and Junction lines, it delivers minimalist efficiency with rugged upgrades, including fully solid external pockets for extra durability.
Crafted from Dyneema® Woven Composite 3.9, a fully woven 200-denier fabric, the Southwest 70L offers exceptional abrasion resistance while remaining impressively lightweight and completely waterproof. From dense brush and rocky scrambles to harsh alpine environments, this fabric is built for harsh treatment.
The three Dyneema® Hardline external pockets protect essential gear from snags, punctures, and abrasion. Taller side pocket profiles and optimized openings make it easier to grab bottles or stash gear you need on the go. Redesigned shoulder straps and a sewn-through back panel improve long-haul comfort, weight distribution, and structural stability.
Inside, the pack offers 70 liters of internal capacity with a roll-top closure system that allows flexible volume control and weather protection. A streamlined hydration sleeve and oversized hip belt pockets simplify organization. Two contoured, removable aluminum stays and a high-support dual-density foam back panel ensure you can carry up to 27 kg comfortably and efficiently.
Starting at just 1008 grams (size M), the Southwest 70L is ideal for extended backcountry travel, thru-hikes, or winter expeditions — where reliability, volume, and low base weight all matter.
MATERIALS | Dyneema® Woven Composite 3.9, Hardline |
INTERNAL VOLUME | 70L |
EXTERNAL VOLUME | 16L |
WEIGHT | White: 1008 g, Black: 1019.6 g *Average weight based on size medium* |
LOAD CAPACITY | Up to 27 kg | 60 lbs |
BACK WIDTH | 27.9 cm | 11 in |
HEIGHT (FULLY UNROLLED) | 97.8 cm | 38.5 in |
TOP CIRCUMFERENCE | 114.3 cm | 45 in |
BOTTOM CIRCUMFERENCE | 95.3 cm | 37.5 inch |
![]() | ICREASED DURABILITY The new Dyneema® Woven Composite 3.9 fabric offers a significant boost in durability and abrasion protection, surpassing that of the previous Dyneema® Composite Hybrid 5.9 fabric while maintaining the light weight of Dyneema® Composite Hybrid 3.8. |
ENHANCED CARRY COMFORT Redesigned shoulder straps and a sewn-through back panel provide a more comfortable and secure fit, with better weight distribution and less wear over time. | ![]() |
![]() | IMPROVED STORAGE ACCESS Redesigned outside pockets with more depth, lower back edges for easier access to water bottles, and improved security for gear (like the ice axe) make packing and accessing items more convenient. |
SIZE | TORSO LENGTH / cm | TORSO LENGTH / inch |
Extra Small | < 38cm | < 15'' |
Small | 38cm - 43cm | 15.0'' - 17.0'' |
Medium | 43cm - 48cm | 17.0'' - 19.0'' |
Large | 48cm - 53cm | 19.0'' - 21.0'' |
Tall | > 53cm | > 21.0'' |
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