Front view of the White Southwest 40 Pack with black straps and a triangular Hyperlite Mountain Gear logo #Color_White
Adventurer equipped with the Southwest 55 backpack and trekking poles traversing a sandy landscape
Left side view of Hyperlite Mountain Gear's Southwest 40 Pack in White #Color_White
Right side view of Hyperlite Mountain Gear's Southwest 40 Pack in White #Color_White
Back view of Hyperlite Mountain Gear's Southwest 40 Pack in Black showing hip belt and straps #Color_White
Front view of the Black Southwest 40 Pack featuring a Hyperlite Mountain Gear logo #Color_Black
Left side view of Hyperlite Mountain Gear's Southwest 40 Pack in Black with a white brand logo #Color_Black
Right side view of Hyperlite Mountain Gear's Southwest 40 Pack in Black showcasing its adjustable straps #Color_Black
Back perspective of a Black Southwest 40 Pack with orange straps #Color_Black
Southwest 40 Pack with an interior collapsible compartment and handle
Detail shot of Hyperlite Mountain Gear's White Southwest 40 Pack's water reservoir and chest strap
Detail shot of Hyperlite Mountain Gear's Southwest 40 Pack featuring a blue hydration hose
Pyramid logo of Hyperlite Mountain Gear on the Southwest 40 Pack in White
Rear view of Southwest 40 backpack with checkered Dyneema back pocket
Detail shot of the zippered hip belt pocket of Hyperlite Mountain Gear's Southwest 40 Pack in White
Right side view of a female model wearing the Southwest 40 Pack in White
Left side view of a female model wearing the Southwest 40 Pack in White
Front view of a female model showcasing the Southwest 40 Pack in White
Adventurer equipped with the Southwest 55 backpack alongside a mountain
Hiker wearing the Southwest 40 Pack in White
Male carrying the Black Southwest 40 Pack in Black
Detailed view of the top compression straps on the Southwest 40 Pack in White
Thru Hiker on a trail with a White Southwest 40 backpack
Detail view of the Southwest 55 Liter backpack with a blue hydration hose feature
Rear view of Southwest 55 Liter backpack with a distinctive black and white pattern
Top view of Hyperlite Mountain Gear's Southwest 70 Pack in White
Close-up of Southwest 55 backpack's interior and mesh pocket
Bearded hiker reaching the summit with the Southwest 55 backpack
Detail shot of the chest strap and buckle on Hyperlite Mountain Gear's Southwest 70 Pack in White
Individual carrying various items in the Southwest 40 backpack by Hyperlite Mountain Gear
Individual posing with the Southwest 55 backpack in a mountainous terrain
Hyperlite Mountain Gear's Southwest 70 Pack in White on a hikers back in the canyon
Hyperlite Mountain Gear's Southwest 70 Pack in White on hikers back
Southwest 55 backpack's pocket with a smartphone for on-the-go connectivity
Detail view of the shoulder straps, sternum strap and blue hydration hose on the Southwest 55 backpack
Female wearing the Southwest 55 backpack draped over her shoulders
Hyperlite Mountain Gear's Southwest 70 Pack in White on a hikers back in the mountains
Hiker using the Southwest 55 backpack with trekking poles on a rocky landscape
Hyperlite Mountain Gear Southwest 55 Liter backpack showcasing its unique black and white design with a logo #Color_White
Side View of the Hyperlite Mountain Gear Southwest 55 Liter backpack in Black on a white background #Color_Black
Detailed view of the Hyperlite Mountain Gear White Southwest 55 backpack's back panel with multiple strap adjustments #Color_White
Southwest 55 Liter backpack designed with contrasting black straps and buckle on white Dyneema material #Color_White
Southwest 55 backpack displayed on a white background for clear viewing #Color_White
Front View of the 55 Liter Black Hyperlite Mountain Gear Southwest on a white background #Color_Black
Southwest 55 Liter backpack featuring black fabric and adjustable straps #Color_Black
Back view of Hyperlite Mountain Gear's Southwest 70 Pack in Black showing hip belt and straps #Color_Black
Exterior shot of Hyperlite Mountain Gear's Southwest 70 Pack in White #Color_White
Left side view of Hyperlite Mountain Gear's Southwest 70 Pack in White #Color_White
Right side view of Hyperlite Mountain Gear's Southwest 70 Pack in White #Color_White
Back view of Hyperlite Mountain Gear's Southwest 70 Pack in White showing hip belt and straps #Color_White
Exterior shot of Hyperlite Mountain Gear's Southwest 70 Pack in Black #Color_Black
Left side view of Hyperlite Mountain Gear's Southwest 70 Pack in Black #Color_Black
Right side view of Hyperlite Mountain Gear's Southwest 70 Pack in Black #Color_Black
Rear view of the Black Southwest 55 Liter backpack highlighting the strap design #Color_Black

Southwest

Rated 4.9 out of 5
Based on 946 reviews

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.

Volume
Torso Length
Color:White
Weight: 28.1 oz
Availability: In stock, ready to ship
Sale price$349.00

How to Choose a Pack Size

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

  1. Tilt your head slightly forward to locate the bony bump at the base of your neck. (This is your 7th cervical (or C7) vertebra).
  2. Using a flexible tape measure, have someone measure starting at that spot and running down along the curve of your spine.
  3. 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.
  4. 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.
    • Extra Small (< 15" torso)
    • Small (15.0” - 17.0” torso)
    • Medium (17.0” - 19.0” torso)
    • Large (19.0” - 21.0” torso)
    • Tall (21.0”+ torso)
  5. 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.


How to Choose a Pack Size

How to Choose a Pack Size

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

  1. Tilt your head slightly forward to locate the bony bump at the base of your neck. (This is your 7th cervical (or C7) vertebra).
  2. Using a flexible tape measure, have someone measure starting at that spot and running down along the curve of your spine.
  3. 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.
  4. 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.
    • Extra Small (< 15" torso)
    • Small (15.0” - 17.0” torso)
    • Medium (17.0” - 19.0” torso)
    • Large (19.0” - 21.0” torso)
    • Tall (21.0”+ torso)
  5. 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.


How to Choose a Pack Size

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

Product Walkthrough Video | Southwest

WHY CHOOSE THE SOUTHWEST?

A white triangle logo on a black background.

SOLID & SECURE

Three easily accessible external pockets to store and protect your gear

A white triangle logo on a black background.

DURABLE ABRASION PROTECTION

External Hardline with Dyneema® side pockets keep your gear protected and free from any unwanted snags or abrasion

A white triangle logo on a black background.

WATERPROOF MATERIALS

Pair with our Stuff Sacks for a buttoned up, nearly waterproof kit

average rating 4.9 out of 5
Based on 946 reviews
  • 5 Stars
    836 Reviews
  • 4 Stars
    96 Reviews
  • 3 Stars
    8 Reviews
  • 2 Stars
    5 Reviews
  • 1 Star
    1 Review
98% of reviewers would recommend this product to a friend
Customer photos and videos
Review posted
Reviewed by Baby R.
Southwest 40
Reviewing
Southwest 40
Age Range
18 - 24
What activities did you use this product for?
  • Backpacking
  • Thru Hiking
What size pack did you order?
Large
Rated 5 out of 5

You get what you pay for...and then some

Purchased this pack a few years back after spending quite a while dialing down my gear in anticipation of some longer backpacking trips, and got to truly put it through its paces this summer on my thru hike of the Long Trail. In a very short summary, it's as close to a masterpiece as a backpack can be. But to elaborate further, I decided to list out some specific pros and cons.

Pros:

- Bombproof. This thing absolutely does not quit. As anyone who has done the long trail knows, there's a lot of fairly technical parts where your pack makes contact with rocks, roots, etc. After 270 miles of abuse, this thing looks like it did the day I got it...except now the white DCF is no longer quite so white. But especially compared to certain other UL pack brands that may or may not start with Z, the build quality on this thing is nothing short of sensational. Not a single seam, zipper, strap, or stitch has loosened or degraded in any way, and I know for a fact this thing can and will survive many, many more miles on trail. It might not be *the* absolute lightest UL pack out there, but in terms of material and build quality you'd be hard pressed to find something that manages to be this light while being so tough. In terms of dollars per mile, especially for someone who does a lot of hiking in technical environments, I genuinely cannot think of anything on the market which would outperform this pack, especially for the weight. Plus it's waterproof, meaning that my gear stored inside…

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I recommend this product
How was your pack fit?
Rated -1 on a scale of minus 2 to 2, where minus 2 is Too Small, 0 is Just Right and 2 is Too Big
Rate your level of experience in the backcountry.
Rated 3 out of 5
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Review posted
Reviewed by Karl C.
Verified Reviewer
Southwest 55
Reviewing
Southwest 55
Age Range
45 - 54
What activities did you use this product for?
  • Backpacking
  • Thru Hiking
  • Other
What size pack did you order?
Large
Rated 4 out of 5

Love this Pack, Very Comfortable.

I started with a WindRider 2400 but switched to the Southwest 3400. I prefer the solid material on the pockets to the mesh due to snagging in trees and brush. The SouthWest glides though the brush with no problem. I love the nearly waterproof pack paired with the Hyperlight pods for a dry and balanced load. I stand at 5'11" and only weigh around 160 lbs. which leaves me with just about no hips. The Hyperlight packs (both the WindRider and Southwest) fit me great and the majority of the weight rests on my hips. I don't have to constantly fiddle with my belt to sit correctly like all my other packs. I can even use this for fast-packing by cinching it a bit tighter and the load rides perfectly (no bounce). I decided to go with the 55 liter over the 40 liter due to being able to roll it down to the same size for less than 2 oz. additional weight. This allow for that bulky winter gear. The explanation for the 4 star review vs a 5 star is due to the Velcro closure at the top of the opening to the main body of the bag. There is no need for this as I can see, it is loud as can be when accessing your belongings (can be a real issue when camping close to others. The worst thing about the Velcro, it will damage expensive gear by snagging it while inserting or removing items from bag. I hope HMG will consider removing the Velcro.

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How was your pack fit?
Rated 0 on a scale of minus 2 to 2, where minus 2 is Too Small, 0 is Just Right and 2 is Too Big
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Rated 4 out of 5
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Review posted
Reviewed by Duane R.
Verified Reviewer
Southwest 55
Reviewing
Southwest 55
Age Range
45 - 54
What activities did you use this product for?
  • Backpacking
  • Day Hiking
  • Thru Hiking
What size pack did you order?
Tall
Rated 5 out of 5

10 days solo on the Colorado Trail

I used this pack for a 12 day trip in New Mexico where I was able to keep the weight to less than 35-36 pounds. Awesome!

I then used the pack on a 10 day self supported trip on the Colorado Trail which meant 18# food (including 2 bear bags). The pack weight with water and food was now at 45+ pounds which wasn't as nice. I am pretty thin so the hip belt dug into my iliac crests and I developed some wicked blisters, but as the days went by the pack lost weight and I had to be satisfied with wearing the pack lower down on my hips.

Summary: This pack is best when planned on resupplying on a regular basis but not so much when it is heavy. When the pack is light this thing is awesome. The hip belt pockets and especially the rear pocket are awesome and can hold a lot of gear that you want to get to quickly. When used with the pods this pack packs incredibly easily and efficiently. Love that. For super convenience I used the Versa ***** pack secured around the pack which held my lunch, snacks, and spoon. Love the Versa pack. I would just think twice if I were to carry this pack loaded more than 40 pounds.

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Rated 0 on a scale of minus 2 to 2, where minus 2 is Too Small, 0 is Just Right and 2 is Too Big
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Rated 5 out of 5
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Review posted
Reviewed by Scott C., from United States
Southwest 55
Reviewing
Southwest 55
Rated 5 out of 5

Maybe the best pack ever made. . . certainly the best of 10+ that I own.

I have been an avid backpacker for the past 15 years. Most of my multi-day backpacks are from Osprey. I have always been a fan of lots of straps, pockets and lids. The more the merrier as this gives me tons of options for carrying gear. The downside to this is weight. While I am a true weight-weenie, I am not a minimalist. So my previous backpacks tended to be heavier as they provided great comfort. I love gear with multi-purpose functionality, quality construction and ultralight weight products. This is what drew me to the brand. I also own their pods, shoulder pocket, Repacks, stake kit, water bottle holder, stuff sack pillow and more. All of these products have exceptional quality.

What I love about the Southwest 3400 Black pack:

1. The black dyneema is a little heavier than the white dyneema and worth the small weight gain for the durability gain, to me.

2. The pack is fast, to operate. Compared to the Osprey with multiple buckles, lids and flaps, this pack is much faster to open. Two side buckles, top buckle, velcro and I am inside.

3. The hip pockets are very generous in size compared to Osprey. I can hold a lot more essential gear that I used to keep in the Osprey top pouch, which again makes me faster and requires less stops to grab gear. Left pocket: lip balm, hand cream, Deejo pocket knife, toiletries, snack. Right pocket: Sunglasses, OR foldable hat, Nitecore headlamp.

4. Accessories pockets are all huge! I can store a Nalgene and GSI microlite 500ml thermos…

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Review posted
Reviewed by Donna Hatch B.
Verified Buyer
Southwest 55
Reviewing
Southwest 55
Age Range
55 - 64
What activities did you use this product for?
  • Backpacking
  • Thru Hiking
What size pack did you order?
Small
Rated 5 out of 5

Just as I hoped for

I am a long time Osprey user and I was hesitant to switch packs. But as I get older and the trail gets harder, I wanted something lighter. Love my Hyperlite. Got the 3400. Plenty of room. Have been able to backpack 3 days carrying 18-22 lbs easily. Have had to make some adjustments like packing my heavier items on top and fiddling with the straps. Love the roomy side pockets and front pouch. Wish they would have included some bungee straps in outside of front pouch but I guess I can add them.

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How was your pack fit?
Rated 0 on a scale of minus 2 to 2, where minus 2 is Too Small, 0 is Just Right and 2 is Too Big
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Rated 4 out of 5
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