Gear Junkie Best Ultralight Backpacking Backpack
Southwest 40
SKU: 3-10240-0
DESIGNED FOR: All-purpose backpacking
GREAT FOR: Any on-trail or off-trail backcountry activity
WEIGHT: 29.9oz | 848g (Med/White), 32.4oz | 919g (Med/Black)
PRIMARY FEATURE SUMMARY
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. Primary features include:
- 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
WHY CHOOSE THE SOUTHWEST 40?
WHY CHOOSE THE SOUTHWEST 40?
SOLID & SECURE
Three easily accessible external pockets to store and protect your gear
DURABLE ABRASION PROTECTION
External Hardline with Dyneema® side pockets keep your gear protected and free from any unwanted snags or abrasion
WATERPROOF MATERIALS
Pair with our Stuff Sacks for a buttoned up, nearly waterproof kit
FEATURES
Featured Product Reviews
SPECS & DIMENSIONS
-
MaterialsWhite: DCH50 (Main Body) & DCH150 (Bottom)
Black: DCH150 (Main Body & Bottom) - Internal Volume40L
- External Volume9.8L
-
WeightWhite: 29.9oz | 848g
Black: 32.4oz | 919g
*Average weight based on size Medium - Load CapacityUp to 40lbs
- Back Width10.5" | 26.7cm
- Height (Fully Unrolled)30.0" | 76.2cm
- Top Circumference37.5" | 95.3cm
- Bottom Circumference33.5" | 85.1cm
- Made InMexico
WHY CHOOSE THE SOUTHWEST 40?
SOLID & SECURE
Three easily accessible external pockets to store and protect your gear
DURABLE ABRASION PROTECTION
External Hardline with Dyneema® side pockets keep your gear protected and free from any unwanted snags or abrasion
WATERPROOF MATERIALS
Pair with our Stuff Sacks for a buttoned up, nearly waterproof kit
Features
Product Walkthrough Video | Southwest
MORE FROM HYPERLITE
Stories from the Trail
SOUTHWEST IN THE WILD
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Product Reviews and Questions
Keep on packing
I wanted a somewhat smaller pack,for my summer weight gear. Wanted to try the black. My other pack is the white southwest 55l I use in winter. Both great packs.
Great gear
This is my wife’s go-bag -with pods to go along with it . She loves it !
A great addition to my Hyperlite collection!
Lightweight and versatile, this pack is very durable as well! Since these are ultralight and can pack a lot of stuff, we usually take larger daypacks so we don't have to cram everything. During one of our hikes, our dog became tired. So, we carried her the rest of the 3 miles in this pack, which weighed a little over 32 pounds with her in it. She seemed very comfortable in it and was back to her normal hyperactive self once we got back to the trailhead. Certainly got the attention of other hikers who were in search of a great backpack!
Great Pack
To think I have been using heavy packs all these years
Best backpacking bag I've ever owned
The Hyperlite Mountain Gear Southwest 40 Backpack is an absolute game-changer. I put it to the test during my rain-soaked W Trek in Patagonia, and it kept all my gear bone-dry. Plus, it’s been my trusty companion on countless backpacking trips across Washington state, never once disappointing me. Lightweight, waterproof, and thoughtfully designed—this backpack is a must-have for serious adventurers.