Hyperlite Mountain Gear Southwest 55 (2025)

Durable backpack for hikes

The Southwest backpack is one of the toughest packs from Hyperlite Mountain Gear. Both side pockets and the large front pocket are made from durable material to withstand even the most demanding conditions. This backpack is perfect for treks and mountain crossings characterized by dry environments, rocky and rugged terrain, and overgrown trails with dense vegetation.

The Southwest backpack with a volume of 55 liters offers a wide range of possibilities and uses. It's perfect for demanding weekend adventures, multi-day mountain treks, and even the longest treks in the world. Thanks to the roll-top closure and two compression straps on each side of the backpack, you can easily adjust the volume as needed. When you don’t need the extra capacity, you can roll the roll-top closure down enough that the volume resembles that of a backpack – Southwest 40.

Backpacks from Hyperlite Mountain Gear are among the most popular on long-distance hikes in America like the Pacific Crest Trail and the Continental Divide Trail, and we think that says something (this info comes from annual surveys on the blog halfwayanywhere.com).

Specifications

• Top closure – roll-top system with Velcro, top Y-compression strap.
• Back panel – integrated foam panel (0,6 cm) and sewn construction for ergonomic curvature.
• Reinforcement – two removable aluminum stays for better load transfer.
• Hip belt – padded with double-layer foam and spacer mesh, two pockets with waterproof YKK zippers.
• External pockets – two deep side pockets and a large front pocket made of durable Hardline material with Dyneema® and an elastic rim.
• Shoulder straps – comfortable, wide enough, and padded shoulder straps with ergonomic curvature.
• Chest strap – adjustable and sliding, with expanded attachment options.
• Compression straps – detachable, adjustable attachment, with the option to centralize the load.
• Hydration – a simple system with a hanging loop and a port at the top of your back.
• Taped seams – all side seams and seams under the pockets are taped to increase water resistance.
• Accessory options – compatible, for example, with Shoulder Pocket, Bottle Pocket, Versa, Pods, inside loops for attaching additional pockets.

Materials

The main part of the Hyperlite Mountain Gear Southwest backpack is made from a new material. Dyneema® Woven Composite 3.9, which offers a combo of low weight, high strength, and top-notch abrasion resistance. Thanks to the fully woven outer layer made of Dyneema® fibers, the material is super strong and durable, feels nicer to the touch, holds its shape better, and doesn’t make annoying noises even in cold weather.

The material itself is 100% waterproof, but the stitching can create tiny holes. Even though more than 90% of the seams on the backpack are taped, you can't call it 100% waterproof. For complete protection against water and moisture, we recommend supplementing the backpack with waterproof bags.

The side pockets of the backpack, the pockets on the hip belt, and the large front pocket are made of a highly durable and tough Hardline material with Dyneema®, which can handle even the toughest terrain.