Very warm, but too heavy, and failed when we needed it.
This is a bomber tent, and it can take a beating. When it's fully guyed out with all 8 points, it can deal with serious wind and snow, and it did. at one point, we had 12 inches of snow piled on top of it, and the tent was fine. Now on to the bad. As you can read in Ethan's review below, we got caught in about three inches of rain followed immediately by 20 inches of snow, and that combination caused too much stress in the fly, ripping it in several places. This tent is also almost 13 pounds with everything included, and packs really big. I would recommend it as a base camp tent, but any kind of trip that you're going to be carrying a tent with you on, I would pass on the Trango. It's definitely not a four season tent, simply a winter tent. Look at the Black Diamond 4 season tents for something lighter and just as robust. Their Bibler Bombshelter is a 4-man tent that is 4 pounds lighter, has more floor space, and is even more robust. Look there for a better all around tent.