Sierra Designs set out develop a tent that will handle all your winter and summer multi day missions with its Convert 3 4 Season Tent. Its hybrid doublesingle wall construction offers excellent, all season protection that gives you a dry place to warm up and sleep soundly, and despite its bomber construction, this tent remains fairly lightweight so you won't feel too weighed down while you climb. The floor consists of a durable nylon that Sierra Designs fully taped for extra waterproof protection. The tent's DAC NSL poles are featherlight to keep the weight off your back while you hike, and the locking pole tips prevent the poles from bending and collapsing when the winds start to howl. The unique design of the Convert 3 puts a breathable double wall canopy at the tops and sides of the tent, and the fabric is engineered to prevent dust and spindrift from blowing in whether you're camped on a high elevation snowfield, or dusty desert floor. For winter camping, a removable vestibule provides ample storage for all your gear, while a second vestibule sold separately can be attached at the other side of the tent for even more storage space. When summer camping, the vestibule can be left back at the truck to shave almost a whole pound from the total weight of the tent. An external pitch design makes set up easy in even the most foul weather and two doors make for easy ins and outs throughout the night.