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The Marmot Kompressor Plus Backpack is a lightweight summit pack that can be used for short day hikes or final pushes to the top. Light technical materials and streamlined construction keep the weight down without sacrificing durability, and the compressible design means you can throw it in your multi-day pack or duffel without taking up much room.

  • Airmesh shoulder straps are lightweight and ventilated for easy comfort
  • Removable closed-cell foam back sheet offers a bit of support while remaining flexible
  • Top loading access is simple and easy to use
  • Compressible design lets you stuff the pack into the lid pocket
  • Durable nylon double ripstop with silicone-impregnated panels is lightweight and tough
  • Hydration sleeve holds your reservoir so you can wet your whistle
  • Full-body compression straps tighten down your load so your gear doesn't shift or swing around on your back
  • Daisy chain and dual ice ace loops haul your climbing and mountaineering gear

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Marmot Kompressor Plus Backpack - 1220cu in

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Here's what others have to say...

Is this pack waterproof?

Responded on

Nope, not waterproof, just resistant.

Unanswered Question

Is this pack waterproof?

1 5

10 weeks in Europe made me hate it

  • Familiarity: I've put it through the wringer

I brought this pack with me as a day pack that could stuff into itself and be carried inside my larger, living-out-of backpack. The packing down was key for me, and it did that just fine. But because it has zero structure (don't be fooled by that foam insert, it does nothing), things like my camera, water bottle, maps, passport, and the multitude of coins that they use in Europe instead of bills got all jumbled up in the bottom of the bag, while it swayed out and lost all form. I stuffed magazines and paper bags in the slot with the foam insert, which helped. I used the chest and waist straps in an attempt to give it more structure, which didn't work. I filled it with clothing items that I wouldn't need for the day, which gave it structure but made me tired and sweaty faster. I couldn't really find a use for the mesh pocket, which is so exposed and easy to open that I didn't feel safe putting anything in there. The chest straps aren't secured to the shoulder straps very well, and many times I nearly lost one or both. They would just fall off. The compression straps on the sides were sort of nice, but when I tried to attach a sweater to them, it would slide out. The shoulder straps tended to dig in if I had too much in the pack, and there was no distribution of weight. We went hiking with it, city sight-seeing with it; we went to the beach with it. In none of these situations was I impressed with this pack.

4 5

Great for its intended use

  • Familiarity: I've put it through the wringer

The Marmot Kompressor Plus is intended to be a lightweight, packable daypack. I use it on backpacking trips-- I pack my clothing in it and put it inside my backpack until I get to my "base camp", then I use it as a daypack for day trips. Some reviewers have complained that it doesn't have its own structure but that's because it is ultralight and multi purpose. Yes, it does tend to hang a bit like a shapeless sack, but I did an eight hour, three peak hike with it and didn't find that to be a problem, and I used it without the foam "stiffening" board. It has quite a large capacity, which is good if you need to carry rain gear, warm clothing for the summit, water, food and a water filter. The back isn't mesh, but I didn't find it made my back any sweatier than every other pack I've carried.

The capacity and light weight of this pack also make it ideal for an overnight/weekend travel bag, which is my other use for it.

The problems with this pack are: The mesh pocket on the bottom isn't super durable and tends to snag when you duck under trees that lean/lie across the trail, causing small holes; and, there is no insulation between your back and your hydration bladder if you use the hydration sleeve-- which means your cold water will make you colder on a cool day or your back will warm your water quickly on a warm day. Even so, I am very fond of this pack.

5 5

Does the trick for ultralighters

  • Familiarity: I've used it several times

The unique design and super-low weight drew me to this pack and after weighing options with competing day packs - I settled on it as a risk. But, I'm not disappointed since it does the trick.
First outing was a simple day hike to get used to the minimalist style. Fits very well and rides just fine. Having no ventilation does make your back very wet with sweat; but that's a trade-off for the reduced weight.
Subsequent outings with MB in Colorado and on the AT through the Smokies convinced me this is a great ultralight option. You will have to like the feel and adjust from your previous packs - but the weight savings are awesome.
Best feature is that it stores in its own pocket for traveling or throwing in a larger backpack. Just take out the foam back support; roll it up; and everything packs up fine for travel.
Storage is ample (although there are no internal pockets or hydration sleeves) and manufacturing quality is superb.

Does the trick for ultralighters
5 5

Great day pack!

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

I take many New England day hikes and climbs with my dog. This pack is great for holding our basics and is comfy on my shoulders. Many adjustments for comfort. Very happy with this purchase. Price is good as well.

2 5

Was not for me

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

Just wasn't what I was looking for did not need a lightweight pack and was way too small for my needs, I tend to over pack and take a ton of crap anytime I go somewhere, also wasn't fond of the shoulder straps and started getting really mad at the back support on it, it was just a thin piece of foam that moved around and could be taken out but after taking it out one time I could never get it readjusted right, I didn't keep this long, returned it a week or so after ordering it.

1 5

Pretty terrible

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

This pack it odly shaped and very big volume for an UL pack. i loaded it and all my gear sank to the bottom and the foam pad also folded up and became useless. this pack it a large volume ultra lightweight pack and has to support/form so if that is what you want go ahead but for me it was awful. i used this once and returned it to where i bought it on the way home.