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Marmot Fortress UL Tent: 2-Person 3-Season

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Why We Like The Fortress UL Tent

We believe there's no reason not to feel like royalty when we're camping in the backcountry. So, we recommend you set up the Fortress UL Tent for you and yours, and enjoy luxurious living and fresh air at the same time. This 3-season tent fits at least a couple of adult humans, but just as easily accommodates you and your furry best friend, with all the amenities you need to stay dry, star gaze, and sleep well.

  • Superlight backpacking tent with a spacious feel
  • Waterproof fly, floor, and sealed seams keep out stormy weather
  • Color-coded clips, poles, and fly make for a quick, easy set-up
  • Pre-bent poles create plenty of sleeping space and headroom
  • Two doors and two vestibules keep both parties happy
  • Vents and mesh panels allow for airflow and relaxing views
  • Lampshade pocket stows a headlamp for ambient light at night
  • Item #MARZ9GX

[fly] 100% polyester ripstop, PU 1200mm, [canopy] mesh, 100% nylon ripstop, [floor] 100% nylon ripstop, PU 2000mm
Wall Type
Pole Attachment
Number of Doors
Number of Vestibules
Vestibule Space
11sq ft, 6.5sq ft
fully sealed
Interior Height
Floor Dimensions
88 x 54in
Floor Space
30.6sq ft
Packed Size
24.5 x 7in
Trail Weight
4lb 3.5oz
Recommended Use
weekend camping, backpacking
Manufacturer Warranty

Tech Specs

What do you think about this product?


>Rating: 5

Great tree line 3 to 4 season tent

I've put it through the wringer
True to size
5` 10"
165 lbs

Let me start by saying, this tent is a hidden gem. If you are looking for a winter tent at a low backpacking weight or a base camp tent, this is it. 3 nights of snow, 3 nights of rain and a total of 12 nights altogether and only in sub freezing temperatures. Durable, well built and warm. Polyester rip stop rain fly is excellent for snowy weather. Venting is excellent. I can also see this tent being used for desert environments when sand spindrift is blowing. The only issue I had was the stakes. They are very ultralight and will break when putting them in frozen ground, mine did. I have replaced them with MSR Ground hogs. Pitch this tent properly (like every tent should be) with a footprint and you will feel very secure. No leaking, no sagging, very spacious, plenty of room for winter gear and 1 person. Don’t overlook this tent, it’s a winner. 3 thumbs up

>Rating: 3

Not waterproof

I've put it through the wringer
True to size

We invested in this tent because we wanted something that was 3-season, waterproof, and lightweight. The tent is lightweight. We found the tent to be quite warm (we were camping in the summer but hope to use it in the fall). During our trip, we had pouring rain a number of times. I would say that the rainfly is waterproof. When I packed up our mat, at the end of the trip, the floor of the tent was wet. We stayed dry overall but felt some moisture coming through the lower part of the sides at times. I have to say that I was disappointed that the tent didn't stay dryer through the rain.

Did you use a footprint with the tent? Tent floors arent meant to be 100% water proof.

if your footprint sticks out beyond the tent body, water can accumulate and make the tent floor wet, it happened to me once.


What is the package weight of this tent?