The Marmot Colfax 4-Person 3-Season Tent sleeps four comfortably, but that doesn't mean you need to try and cram the entire family reunion in there. You could sleep in there with a just a friend or two, and maybe your pup, and still have plenty of space to stretch out, relax, and enjoy the night. The Colfax's roomy footprint is big enough for an air mattress, and its nearly vertical walls help to maximize interior space so you don't feel like the walls are falling in on you. Marmot also hooked it up with a spacious double door, so there's plenty of space to crawl in and out of the tent or throw in that plush mattress when you can spare the space. In addition to the large front door, the Colfax also sports three zippered windows that can be opened up to vent hot air and draw in a cool breeze, or closed up when conditions are a little colder.