The Tundra Trax Bootie keeps feet toasty and warm and are perfect for winter camping, lounging at the cabin or ski resort, or relaxing at home on the weekend. NWOT. 100% recycled Pertex Quantum Eco shell is water-resistant, wind resistant, and breathable. PrimaLoft insulation with thermal properties that remains warm even when wet. Size M (approx. women’s 8-10; men’ 9-11). Drawcord adjustable cuff keeps the cold air out. A comfortable memory foam insole. For slip-on warmth when the temperatures plummet, the Tundra Trax Bootie is a perfect choice for cold-weather adventures.