Epic XT Hydration Backpack

(4 customer reviews)


The Epic XT hydration backpack is the solution to anything adventure. This lightweight, energy-conserving, large-scale hip-leveraged pack is compatible with long or multi-day self supported endeavors. Built with an extremely durable fabric, the Epic XT can be used in a variety of ways. This pack features a 2-type fiber system that helps to disperse moisture during those long hot adventures. The Epic XT comes with a removable frame. This frame, when inside the pack, increases load carrying capacity or can be removed for less taxing endeavors. It features many quick stash pockets, and a new Max 02 sternum buckle system to keep the Epix XT secure during difficult upper body movements. One size fits most.





SKU: N/A Category:


Extreme Line: Sometimes you just need more. The Extreme Line was created with the deep adventurer at heart. These products are built to last with durable material, stronger breathable mesh, and function for any adventure scenario. This category goes beyond running and hiking and branches into mountain biking, rock climbing, skiing and so much more. The Extreme Line adopts the minimalist mindset of “one item that does it all, and does it well” while staying true to the UltrAspire code, to create an inspired outdoor experience,.

Recommended Use:
Trail Running, Mountain Biking, Canyoneering, Fast Packing, Mountaineering, Rock Climbing, Multi-day Endeavors.


  • Universal Fit
  • Sweat Proof Webbing
  • Rapid Access pockets
  • XT Fabric- Stronger than steel ripstop fibers.
  • Small Footprint for better cooling
  • XT Mesh to pull moisture from the body and evaporate it
  • Insulated Bladder Compartment
  • MAX 02 XT Sternum
  • Small Footprint


Fit:  Unisex
Size:  Universal (Chest Size: 28″-48″)
Color options: Emerald Blue
Hydration (included):  Not Included (Reservoir compatible)
Reservoir Compatible (not included):  Up to 3L
Capacity: 1526 c.i. (25L) Main Compartment 18.5 Liters

Additional information

Weight4 lbs
Dimensions24 × 12 × 3 in

Product Dimension (inches) LxWxH


Product Weight (lbs)

4 reviews for Epic XT Hydration Backpack

  1. Michael H Becker

    The Epic XT

    The best packs are designed for a specific purpose and the Epic XT is designed for three season 3-5 day fastpacking. And for that purpose it exceeds any other pack I’ve used.

    What differentiates the Epic XT from other packs? First and foremost it’s the integral design that only compromises weight where functionality, durability and comfort deem it necessary.

    The first example of this being the front pockets. Many fastpacks skimp on shoulder straps and pockets to eliminate weight wherever they can because weight is something that can be compared and therefore people fixate on. But any savings in that area quickly becomes problematic if you’ve got to add on pockets to carry a phone or a camera or to stop and remove your pack to find your map, compass or snack. The small additional weight of the front pockets on the Epic XT is easily offset by their comfort, convenience and time savings while on the move.

    Another intuitive feature is the use of flasks for hydration and the placement of these in the on the go accessible side pockets. When fastpacking I tend to prefer bottles over a bladder to make it easier to keep track of water usage and to use electrolyte mixes in either bottle if I so choose. And the flasks, as opposed to cylindrical bottles, allows me to jog without worrying about my form as they’re tucked out of the way of my arm swing.

    Another advantage of the flasks in the side pockets is better weight distribution and added flexibility in packing. With water in the flasks I can carry additional water in either a bladder or a Nalgene bottle and place those either in the dedicated hydration sleeve or in the top loading back compartment.

    Like many fastpacks, the Epic XT comes with a lightweight removable frame stiffener, which again is one of those concessions to the weight weenies of the world. I see little advantage in removing it. When fastpacking the stiffener greatly aids in comfort both on the move and in camp. If you’re going light weight and using your pack as part of your bedding system, a pack that keeps its shape and has a bit of thin insulation comes in handy. It allows me to get away with only using a torso pad as opposed to a full length pad. So instead of saving weight it’s really a matter of shifting it around and since it serves to aid comfort on the move, a pack with a light stiffener seems preferable to me.

    There are only two quibbles I have with this pack and one’s not personal; that being the non-adjustability of the sternum straps. They don’t bother me in the least, and while they may work for most, there are bound to be some who wish they were on sliders as is common in many packs. My other slight of the Epic is the small size of the belt pockets. They’re useful, but I don’t feel it would’ve hurt if they were enlarged a bit. And those are about it for suggestions on improving this pack.

    Otherwise this is a stellar pack with all the bells and whistles essential for doing what it was designed for; zip pull tabs, pole holders, an outside mesh pocket for layers, small zippered key and I.D. pocket, a nicely sized top compartment over the large stuff sack main compartment, cinches on the bottom for a sleeping pad.

    As far as comfort and durability goes; I’m in the fortunate position to be a hiking guide and have been using this pack three days a week for the past three months. It’s by far the most comfortable pack I’ve used and shows no signs of wear and tear.

    The Epic XT allows me to cover big miles over short periods of time carrying everything I need comfortably and conveniently. That it’s also durable and reasonably priced make it the complete fastpack package.

  2. Mark Augustyniewicz

    Just did my first overnight with this pack. 30 miles and 5,000 ft of gain. My observations.

    – You can run with the pack. Even fully/overloaded (had tent strapped to outside) the load was stable and I could run flat and rolling trail sections.

    – Pockets are great! You can reach all but the main compartment without removing the pack. My favorite pocket is the weatherproof front zipper that is perfect with my phone – my camera, backup headlamp, and navigation (Bluetooth to InReach). So it’s something I need to access a lot and would suck to lose.

    – It holds a lot. Weather was iffy so I took a lot of stuff. Sleeping bag, sleeping pad, rain jacket/pants, puffy, gloves, hat, glasses, change of running clothes, first aid, food for two days, gps, phone, water filter, trekking poles, and a two person tent, minus the poles, my wife took those.

    – Removable frame is awesome. Easy to remove. With the pack stuffed to capacity, I found leaving the frame behind made the pack fit better and conform to my body. The frame would be super useful if you are not at max capacity to keep the load balanced and secure for running.

    My only negative are the strap sizes. The bottom is adjustable, but not the top which controls where the pockets and chest straps lie. I am 6’3”. While the pack fits, The top pockets were at the top of my shoulders and the top chest strap was almost at my neck. Some of this was due to overloading on my part, fit better on day two with just one day’s food removed, but would be nice to adjust straps from the top, or a “Long” size to accommodate tall people 🙂

  3. Marcia Dority Baker

    I bought this pack for an upcoming multi-stage race. I have used it for 6+ training runs with gear at approximately 17 lbs. The pack is comfortable while running, I appreciate the ability to adjust the straps to fit (I am a 5’5″ female). I removed the frame stiffener as if fits me better without it for long runs. There are a number of storage options/pockets/storage areas, it seems I find a new option each training run. I really like this pack and look forward to using it for future races.

  4. Mindy

    I love this pack! Used it for my winter White Mountain hikes. I really appreciated how much gear this lightweight pack can hold while still being comfortable. Even my snowshoes fit on the outside back straps, and all the rest of my gear comfortably stowed inside. The waist strap with the small storage pockets held my snacks perfectly, as well as room for lightweight gloves. My water bottles were easy to get to on the side pockets and the pack never shifted while scrambling up icy slopes. Great winter pack or fast pack where you need to carry extra gear comfortably and securely.

Add a review

Your email address will not be published. Required fields are marked *

You may also like…