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  • Marmot - Kompressor Plus 20L Backpack -
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  • Marmot - Kompressor Plus 20L Backpack -

Marmot Kompressor Plus 20L Backpack

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11 Reviews


A stowable daypack for bagging summits and day hikes.

After a long, multi-day approach pack an extra layer, some water, and some food into the Marmot Kompressor Plus Backpack, secure your ice axe or trekking pole to the front gear loop, and bag that summit with everything you need and nothing you don't. The pack conveniently stuffs into its lid, so you can bring it along whether you're backpacking through Europe or the North Cascades. A hydration system compatible design lets you bring along your hydration bladder, while multiple compression straps cinch the bag down tight when you're traveling light.

  • Pack stuffs into lid
  • Removable, closed-cell foam back sheet
  • Removable webbing waist belt
  • Airmesh shoulder straps
  • Sternum strap
  • Airmesh back panel
  • Hydration system compatible
  • Compression straps
  • Ice axe/trekking pole attachment point
  • Item #MAR00IP

Tech Specs

70D 210T nylon ripstop, [reinforcement] 210D nylon ripstop
20L (1220cu in)
Hydration Compatible
Ice Axe Carry
Trekking Pole Carry
Claimed Weight
Recommended Use
Manufacturer Warranty

Tech Specs

  • Reviews
  • Q & A

What do you think about this product?

Have questions about this product?

Great summit pack!

  • Familiarity: I've put it through the wringer

I use this as my summit pack when we leave camp on backcountry trips in the Sierras. I am able to put 2 liters of water (Nalgenes), my down jacket, rain jacket, a light layer, lunch and snacks, first aid supplies, plus my climbing harness when we do class 3 accents. The pockets on this bag are great for organizing so you don’t have to dig in the middle of the bag to find the smaller items. I love that it also has a spot to stow my hiking poles. This packs down pretty small and is light. It’s always comfortable no matter how much gear I have in it, the hip and chest straps are a huge plus! I also use this bag around town too, it’s a great size to carry the daily essentials when needed, or down to the beach.

Right size, comfortable, adjustable

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

I have used this backpack so far on two day hikes, in very contrasting climates. The first was on the Hood River on an early spring day with lots of sunshine and a cool breeze, the second was snowshoeing nearer to Mt. Hood with snow falling at first which turned to rain by the end of the hike.

Size was good, I was able to fit enough food for the hikes as well as my friend's fleece sweater and an extra, thinner layer for me, with room to spare. I also had a 100oz Camelbak that was about 2/3 full, which fit comfortably inside. I even cinched down the side compression straps, and everything stayed sturdy.

The fit was good overall, especially with the waist straps. They are definitely waist straps (as opposed to hip straps) because the bag is not super long, but they can be adjusted easily to fit my torso (I'm 5'9", waist of 32 and chest of 40).

I was pleasantly surprised to find that the lid compartment is relatively water resistant, at least the material (not the seems), as I had a leather wallet in it during the rainy hike that was almost completely dry by the end. I'm considering putting some water sealant on the seems to see if it changes the behavior at all, and I'll update this post if I do.

The gear straps on the back worked well, holding my two hiking poles for most of the snowshoeing hike and keeping them off my legs but still close to the pack. I was a little worried about the wear and tear on the rubber piece that holds the elastic straps to the pack, but they fared just fine with no splits or cracks visible after that hike.

Other than that, there's not much to report! This is a pack that does what it's advertised to do, and does it well. Looking forward to more hikes with it!

Great lightweight pack!

  • Familiarity: I gave it as a gift but have feedback to share

Got this for my father as a gift as an approach pack. He mainly uses this pack when hiking in and out on his little climbing trips. He loves how light weight this pack is and how it fits. He said he never has any rubbing issues even if the pack is more on the weighed down side of things. He said there are plenty of pockets for any of the applications he is using the pack for. Worth the buy!

a great summit pack

  • Familiarity: I've used it several times

I needed a lightweight pack to bring backpacking and use for day hikes from basecamp. This pack was perfect for the task. It's lightweight and packs up really neatly in its top pocket, making it easy to fit in the larger pack. And for day hiking, it fit all the snacks, water and raingear I needed and was very comfortable to carry.

Great Day Hike Pack

  • Familiarity: I gave it as a gift but have feedback to share

I bought this for a friend and this is what she has to say:

The bag is great as a hiking day pack. It definitely fits more than you think it would! Has a lot of pockets to store things. Extremely light weight, dries quickly, and fits comfortably. However the side pockets are shaped a little weird and really only fit slimmer water bottles, otherwise they fall out when you bend forward. If the pack is only half full it wiggles a bit, but All in all, would recommend.

Light weight day pack

  • Familiarity: I've used it several times

I bought this pack to primarily use as a packable day pack in my larger bag on weekend trips. It serves that purpose very well with a few minor downsides:

1. Back ventilation. Since the back is flat and not very rigid, it molds to your back and if you are sweating at all, your back will become very wet even if you aren't a heavy sweater.

2. The bag really wants to be full. If it's not, then the "brain" portion clips loosely to the bag (can't cinch down tight) and sags over. If you have more weight in the brain then it kind of flops down especially when you rest the bag down.

3. I wish the shoulder strap adjusts had a way to manage the excess strap like the waist band does.

Overall the bag is very convenient. I use it as a beach bag as well and the large opening makes it easy to get at things. It's also easy to clean.

Marmot Pack

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

I bought this pack in the winter on sale and I planned to use it on short day hikes and to stuff it in my larger pack when I'm traveling to use as a day pack around town. I liked it when I first got it, light, good storage. However, the 3rd time I used it the cord that cinches the top snapped off. Literally the third time i tightened it. So now there is no way to completely shut the pack

It was too late to return to backcountry so I checked marmot to maybe return for a repair. 6-8 weeks turnaround on a repair. Summer will be done by the time I get this pack back.

I would not recommend this pack, it's nice but it's definitely expensive for what it is and obviously the quality is very lacking.

Great packable day pack!

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

This pack is awesome and perfect for taking on long backpacking trips when you want to have a daypack option for exploring! Super lightweight and packable!

Perfect Day Pack!

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

Love this Day Pack! I've been looking for a lightweight pack to carry stuff around for day trips / hiking. I broke this in over a long weekend at Drake Bay, Costa Rica. I was able to carry my 2L Platypus, a Nikon D5200 (entry lvl DSLR), some fruits, cell phone and my ipad, without any issues. The hydration pack fit well and was comfortable but I did need to pad the bottom of the hydration pack with a small face towel to cover the closure so it wouldn't feel like I had a rock in the middle of my back. There is an opening at the bottom to put the hose through, but I couldn't get it to work comfortably so I just had it snake out of the top of the pack (seems like it's a design issue with Platypus, not the pack).

The fabric is quite thin, but seems incredibly sturdy. It's not something that will keep your things dry, so plan to use a dry bag if there is a chance you'll be in the rain or on a boat. It's raining in Costa Rica, so I did just that for my electronics.

I did a 4 hr hike up and down a beach one night and that was the only time I felt the straps uncomfortable with the weight, but that was the longest I spent with this on my back.

I also went for a full day snorkeling excursion, got the pack soaked and was delighted to find it completely dry the next morning when I had to head back home.

Once I got home, I took out the insert and threw this in a sweater bag and in the wash and it came out like new... no issues washing whatsoever.

This really is a great buy for someone travelling with limited luggage space but needing an option to carry your stuff during the day. I can't wait to use it on my next day hike or to travel internationally.

Great and Surprisingly Large!

  • Familiarity: I've used it several times

I love this pack! The first time I used it was on a nearly 13 mile day hike, and it carried all of my essentials well- including a small bladder, rain jacket, DSLR, food, and small first aid kit. My hike included some rough climbing up steep little hills, and once I clipped the sternum and waist straps it stayed on me. I highly recommend this lightweight but strong pack! Can't wait to stuff it in my backpack for day hikes on my next backpacking trip.

Great day pack!

  • Familiarity: I've used it several times

I looked all over for a lightweight but durable daypack I could attach or ball up and throw in my larger back pack for extended trips. The Kompresser Plus fit that bill perfectly. First it is very light weight but very durable. I broke this pack in with 20lbs of metal free weights rolled in a towel. I did that on three different occasions in rain, snow and sunny conditions, Each hike was at least 5 miles. This pack has a sternum strap plus a waste strap. The shoulder straps come with a little loop at the end which makes tightening them up very easy. Has just the right amount of pockets plus the big storage space inside is perfect for just pitching your stuff in no organizing needed.
Highly recommend this pack for space lightweight and durability so far price was just right too.

Unanswered Question

What size hydration bladder best fits this daypack/what size is recommended?