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Swift X Hiking Backpack

36 oz - 1021 g Hiking Backpack

Over 10 years ago we designed an ultralight pack called the Swift. For the Swift's 10 year anniversary we have redesigned it with some modern upgrades. We are proud to offer you the Swift X. Adding to our Zero-G line, the Swift X uses lightweight, yet durable fabric with thoughtful design to create a streamlined and efficient ultralight backpack. The Swift X can handle anything from a quick overnight trip to a calendar year triple crown. 

Size Guide
Shoulder Strap
Hip Belt
Liteskin Heather Gray
X-Pac Navy Blue

Customer Reviews

Based on 3 reviews Write a review

  • The Swift X is designed to be lightweight, durable, and comfortable. Because we want the pack to be comfortable, the pack weight will vary depending on the configuration. Configured as a Frame-less pack with Pack Bag and Shoulder Straps, The Swift X comes in at 26 oz. / 737 g.

    In the Standard Configuration with added Stay and Hip Belt, The Swift X weighs 36 oz. / 1021 g.

    With the Vest Harness, you get additional stability in your load carrying and it brings the weight up to 37 oz. / 1049 g.

    Pack Organization

    The Swift X has a 38-liter main bag with another 6-liter in the extension collar. In addition to the interior space, The Swift X incorporates two 1-liter side pockets and one larger 3-liter center rear pocket. The two side pockets feature a gusseted bottom and an elastic compression strap on the top. 

    The large center rear pocket is perfect for storing the quick access gear you don't want to have to open your pack to retrieve. We use a 4-Way Woven Stretch material for all of our pockets so gear can breathe and the pockets can last. 

    The Swift X also incorporates a top Y-strap with more than enough webbing to accommodate a bear canister, bag of chips, sit pad, or whatever else you want to throw up there.

    Both the Hip Belt and Shoulder Straps also incorporate two pockets each.

    Compression straps along both sides of the Swift X allow you to quickly size the pack to your needs.


    By default, The Swift X comes with a Delrin Hoop Stay frame. Unlike many packs utilizing a similar stay, we bend our stay so that the bottom terminates at the base of your hip belt. This transfers the weight directly to your hip belt.

    Other packs terminate the stay at the outer edges of the pack. Unfortunately, this significantly reduces the load transfer from the pack to the hip belt. It leads to the pack sagging as the pack load is not properly supported.

    Using the Hoop Stay and Hip Beltincreases your load carrying capacity by approximately10 lbs / 4.5 k to 30+ lbs. / 14 k.While you can carry additional weight, we still recommend a base weight of 12 lbs. / 5.5 kor less.


    While there are many Frame-less packs on the market these days. There are none with an Adjustable Torso Length. The Swift X allows you to adjust the torso length to adjust to both your body and the conditions you may encounter. There are times, depending on your load and trail conditions, when you may raise or lower your pack for optimal comfort.

    When configured as Frame-less, you'll want to keep your base pack weight around 8 lbs. / 3.5 k and maximum weight below 25 lbs / 11 k. Comfortable weight depends significantly on the type of load carried and your conditioning.


    Vest Harness

    The Swift X can be configured with a Vest Harness. Six Moon Designs unique Vest Harness supports a 6-point connection between the pack and your body. This connection system offers several distinct advantages.

    1. It eliminates any sway or bouncing in the pack as you walk or run. The pack is fully locked to your body.

    2. It spreads the pack load across a much wider area. Instead of having all of the weight sitting on your shoulders or hips, much of it is spread across your core. This reduces or eliminates sores that can develop when too much weight is concentrated in a single area.

    3. The extra pockets in the vest provide additional storage for items you want to quickly access.


    Years ago when Ron Moak founded Six Moon Designs, his first pack incorporated a Vest Harness, he didn't design it so he could run or hike faster. It was designed to allow him to hike comfortably without a lot of pain. A bout of Cancer had made it difficult to hike more than a couple of hours at a time before stopping due to back pain.

    Incorporating the Vest Harness in the pack provides significant additional support for the back and spine. By spreading the weight, he was able to walk more upright and longer distances without pain.

    If you've found yourself unable to backpack as easily and as long as you once did, you may want to seriously consider the Vest Harness. We make no claims that the Vest Harness is a miracle cure, just that it helped Ron get back to really enjoying backpacking again.

    • Adjustable Torso Length
    • Two Shoulder strap Style options (Shoulder Harness or Vest Harness)
    • Three Exterior Woven Pockets
      • Rear Pocket
      • Two Side Pockets
      • Breathable and Durable 4-way Stretch Material 
    • Large Shoulder Strap Pockets
    • Removable Hip Belt
    • Minimal Contact Back Panel
    • Top Loading with Dry Bag Closure
    • Internal Zippered Stash Pocket
    • Multiple Point Cord Compression System
    • Single Ice Axe or Trekking pole attachment point
    • Dual Hydration Ports
    • Removable Hydration Bladder
    • Sliding Sternum Straps on Vest and Shoulder Harness
    • Delrin Hoop Stay
    • Suspension
      Torso Sizes
      Maximum Load
      Minimum Load

      Flight Series
      16" - 22" | 38 - 56 cm

      11"W X 7"D X 22"T
      Heather Grey or Navy
      35 lb - 14 kg
      15 lb - 5.5 kg or less
      Lightweight Backpacking
      Long Distance Backpacking

    • Pack Body
      Body Contact
      Side Panels
      LiteSkin LS07 or  X-Pac VX07
      3D Mesh
      LS07 or VX07
      4-Way Stretch
    • Body
      Extension Collar
      Exterior Pockets

      Total Volume
      2319 ci - 38 L
      366 - 6 L
      305 - 5 L

      2990 ci - 49 L
    • Body
      Delrin Stay
      Shoulder Strap
      Hip Belt

      Total Weight
      20 oz - 560 g
      3 oz - 85 g
      6 oz - 170 g
      7 oz - 199 g

      36 oz - 1021 g
  • Swift X Hiking Backpack

    By: Six Moon Designs
    Published: 09/22/2020

    Shoulder Straps or Vest Harness?

    By: Six Moon Designs
    Published: 02/06/2020

  • The Swift X

    By: Six Moon Designs
    Published: 01/31/2020

    Shoulder Straps or Vest Harness?

    By: Six Moon Designs
    Published: 02/06/2020
  • Swift X Backpack Review & Overview

    By: Tuba Solo the Hiker
    Published: 4/1/2020
Customer Reviews
3.1 Based on 9 Reviews
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Filter Reviews:
Benjamin P.
United States United States
Swift X is crazy awesome!

I cruised up the Alpine Lakes trails in Washington over steep boulders and quick switchbacks. I’ve never had a better fitting and more comfortable pack! I thru-hiked with an Osprey and had few complaints but the interior space and comfortability was nothing like this Swift. Can’t wait to test it on how much longer trip

Brian b.
United States United States
Awsome pack

Love this pack super light simple and just what you need. hiked 600 miles with it and will be my go to bag for fast and light trips. Love the vest straps, really hugs to your body , will say the bottom sternum strap does slide up while I was hiking, but it didnt really bother me. I'm excited to try it minus the frame and the hip belt for a seriously light weight fast pack love six moon designs gear I have the lunar solo, the fusion 65, and the deschutes plus tarp, along with the swift x across the board all great gear could not recommend them more cheers -noodle

Six Moon Designs Swift X Hiking Backpack Review
Kyle C.
United States United States
A light durable pack

I intended to use the pack for my PCT thru-hike, but when the permit was canceled, the Swift X became my long day of adventure pack. The vest is a great for making snacks and all the other things you need throughout the day available. The pack material is super light, but has been very durable. The day the pack earned my approval was when I decided to toss it down about a 30 foot cliff to make the down climb easier and it landed on some sharp rocks with no ill effects. The mesh pockets on the sides and back are very roomy. There is little reason to have to enter the main compartment until you're ready to set up the tent for the night. The side pockets have room for water, jackets and more. A well designed and made pack from SMD

Joseph E.
United States United States
Swift X Hiking Backpack Review

Generally very good. Very light, excellent fit, seems to be well made and should be durable. A couple of things I would change: - There is no way to to cinch the rolltop to the sides. The top Y strap is fine, but there are times and loads that work better to the sides. It would be useful to have both options. - The sunglasses that I use (Opticus Altice Durango) are rather bulky and require a larger hard case than will fit into the shoulder strap bags - my preferred carrying point. Garmin GPS barely fits. Since the bags are not removable/replaceable, somewhat larger strap bags would be better.

Richard S.
United States United States
Awesome but i really wanted a 50ltr pack

Haven’t used it yet but on inspection I’m thrilled with it and can’t wait for next weekend. It’s quality personified, though, yes, expensive. Perfect example of - you get what you pay for. Just wish it came in a 50 let Suze.