Have you ever spent a night leaning against your tent walls and praying it holds until morning? You dont have to worry if youre bivied in the Marmot Thor Tent. This burly four-season shelter uses a six pole structural system to stand strong in the face of high-mountain storms from Alaska to the Himalayas. Dual doors and vestibules keep you and your climbing partner from stepping all over each other when you get in and out. Marmot used dual-diameter DAC poles to increase strength where needed and shave ounces where some could be trimmed. You dont want to carry any more weight up the mountain than you have to.