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Ultra-light, lean, and capable.

The Marmot Ultra Kompressor Backpack steps it up a notch in the world of ultralight backpacks. Compression-molded Airmesh shoulder straps and closed-cell foam back sheet add padded comfort and support, and a sternum strap and waistbelt transfer the load to reduce back and shoulder pain and strain. If you want to go ultra-light, leave the back sheet and waist-belt at home. Use the compression straps for a lean profile meant for speed; keep up the pace up by staying hydrated with your reservoir nice and snug in its designated sleeve.

  • Removable closed-cell foam back sheet provides cushioning comfort and slides out to be used as a seat or can be left behind if you are going super-light
  • Airmesh compression-molded shoulder straps reduce strain and sweat with padding and ventilation for cool, dry comfort
  • Sternum strap and removable waist-belt transfer weight off of your shoulders and stabilizes pack
  • Main compartment holds rain jacket or puffy, extra layers, plentiful snacks, and gear for all-day adventure
  • Weighs a mere 1lb 6oz delivers so it won’t weigh you down for light and fast travel
  • Top flap access gives a wide opening for easy grabs
  • Lightweight yet durable 210D nylon double ripstop and 70D double ripstop silicone-impregnated nylon handle your use and abuse
  • Hydration sleeve keeps your reservoir (not included) stable and secure while you rock-hop
  • Lid with key clip, front stash, and water-bottle mesh pockets hold frequent-use items conveniently at hand; larger, covered lid pocket secures other essentials
  • Full-body lightweight compression straps shrink your gear down to a manageable size
  • Reflective clip attachment points make carrying helmet or other gear a cinch
  • Dual ice axe attachment hold the tool for technical summit days

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Marmot Ultra Kompressor Backpack - 1350cu in

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Here's what others have to say...

4 5


  • Familiarity: I've used it several times

Love this back. It is a great daypack for hiking or traveling. I have even used it when riding my bike and it works very well. It is light, but very comfortable. Has a sleeve for a reservoir. It also has a port which allows the hose to come out either to the left or the right. The port is a little tight with bigger bite valves like those found on the osprey reservoirs. It takes a little work to get it to feed through, but once you get it you are golden. I love the outside mesh pockets. You can stash or pack items without taking of the pack. The top flap has a small mesh pocket and a key clip. I use the mesh pocket to store small loose items (chapstick, wallet, etc.).

Has a little removable foam back sheet. Not really sure why it comes out as the back panel has additional padding. I guess you could use it to sit on or something. I usually take it out when I put a water reservoir in. It has a clip to attach your reservoir to, so it won't end up in a bunch at the bottom of the pack.

This pack doesn't fold up into a nice little package like the other marmot kompressor packs. It is a very versatile pack that I find myself using all the time. It is the perfect size for a full day outdoors.

3 5

I really wanted to love it

  • Gender: Female
  • Familiarity: I returned this product before using it

I got this pack in the blue with green lettering. I fell in love with the colors and, knowing that I love my other compressor pack, was sure it would be great. Wrong. The straps just didn't sit well on my shoulders. I am female, 5'2" and semi petite... definitely made for broader shoulders. I couldn't see myself using this as a daypack and being comfortable. Also, the mesh pockets on the side seem totally useful but the elastic isn't as tight as, say, Ospreys side pockets, so things are bound to fall out if the pack isn't upright. I filled it and threw it around a bit before I decided to return it. The front mesh pocket is also a great idea, theoretically, but same issue. Stuff fell out, i.e. nutrition bars, pack of gum, headlamp, etc... Unless you fill it to the max, the only support is in the back (which is super stiff - didn't like that either). I wanted lightweight day pack with compression ability but I think I'll stick with my current compressor, as it's not as long and big on me.

The last thing I didn't like was the stiffness of the straps. I was hoping for more of a mesh, less padded strap for light weight, easy throw on, carrying. If you like the padding, it's awesome!

If you're a guy with shoulders, and probably not going to toss the bag on the ground multiple times, I'm sure you'll be fine. I prefer zippers or tight elastic pockets so I don't lose things.

Responded on

What kind of pack do you like/own? I'm your same size and might like what you have :)

Responded on

I love my Osprey Talon 22. It fits like a dream (I have the S/M). But sometimes it is just a bit too much when I just want to carry something simple and don't need all the bells and whistles. I do have the Marmot Kompressor


with the mesh straps and that fits well, but the straps are mesh so if you need more padding it may not work. But again, for a day hike, the mesh is super comfortable. I just have trouble finding lightweight/comfort with practical!

Osprey's are usually my go to. I have the Talon 33 too, and that fits wonderfully.

5 5

Very nice !

  • Familiarity: I've used it once or twice and have initial impressions

I purchased this backpack for a trip later in the year, but in the meantime I've used it on a couple of day trips. I love how light weight it is. I purchased lime green and love the color. All the little compartments, loops and dodads it has are so handy. So far, I couldn't be happier.