Southwest 40 Rucksack – Black DCH150

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Tough and lightweight, the Southwest 40 is built for rugged adventures where durability and simplicity are key.

Hyperlite Mountain Gear says: 

This pack is designed for on-trail, off-trail, and all-season environments, with solid-fabric exterior pockets to eliminate snag risk, protect stowed gear, and provide privacy when resupplying in towns. One of our three all-purpose backpacking models, this workhorse is designed for almost any backcountry activity, from on-trail hiking to the most demanding off-trail and all-season environments.

Our Verdict

The Hyperlite Mountain Gear Southwest 40 Rucksack is a robust and lightweight pack, weighing just 886g for the medium size. It provides a solid balance between durability and minimalism, making it a popular choice among ultralight hikers. Its Dyneema fabric construction ensures excellent water resistance and durability, especially in the black DCH150 version, which is more abrasion-resistant than the lighter white variant.

The Southwest 40’s streamlined design includes a spacious 40L main compartment with nearly 10L of external pocket space. The solid fabric external pockets prevent snags in rough environments, making the pack ideal for off-trail activities. However, as these pockets are not elasticated, they do not have any give. The removable aluminium stays help distribute the weight effectively, though some hikers might find the minimal padding on the hip belt and shoulder straps less forgiving on longer, heavier trips. However, this pack excels for hikers looking to balance low weight with durability in tough conditions.

– Reviewed by Ultralight Outdoor Gear

Features

• Identical to Windrider/Junction but with solid-fabric exterior pockets
• Two over the pocket compression straps for load security
• D-shaped flat bottom keeps pack upright while loading/unloading
• Roll-top closure with internal mesh sleeve & hydroport
• White pack is 50-denier DCH fabric, Black pack is 150-denier
• Bucklesbungees – Four exterior triglide buckles for optional pack accessory straps
• Compatiable with Pods, string or Roll-Top Stuff Sacks, Stuff Sack Pillow
• Daisy chains on shoulder straps
• Three External, solid Hardline with Dyneema® pockets
• Hardline with Dyneema® zippered pockets on hip belt with #5 YKK zipper
• Roll-Top closure system with side compression straps for vertical compression
• Hardline with Dyneema® dual-density hip belt with 1/8” closed cell rigid foam, 1/4” closed cell foam and spacer mesh
• Integrated 1/4” foam back panel pad
• Internal 8″ x 14” mesh sleeve for hydration bladder
• Grab Loop & Ice Axe loop
• Accessory options Shoulder Pocket, Versa, Stuff Sacks & Pods
• Side compression straps for horizontal compression
• Top Y-strap compression — Designed to secure gear
• Hardline with Dyneema® shoulder straps with 3/8” closed cell foam and spacer mesh
• Two removable, contoured aluminum stays
• Adjustable sternum strap with self-tensioning elastic and whistle
• Seam tape on all vertical side seams and behind all sewn-on pack features
• Water resistant

Specifications

• Medium Weighs: 886g
• Large Weighs: 938g
• Volume – 40L
• External Volume – 9.8L
• Load Capacity – Up to 40 lbs
• Back Width – 10.5″ | 26.7 cm
• Height (Fully Unrolled) – 30.0″ | 76.2 cm
• Top Circumference – 37.5″ | 95.3 cm
• Bottom Circumference – 33.5″ | 85.1 cm

Material & Construction

• Black – DCH150 (Main Body & Bottom)

Help & advice:

• The Ultimate Guide to Choosing an Ultralight Rucksack
• Time-Saver Guide to Choosing a Rucksack