The men’s ThermoBall TRACTION Bootie takes the powerful warming properties of leading insulation technology to your feet in a comfort-driven bootie for campfires or cold winter mornings at home. Thermoball insulation mimics goose down loft and retains heat in the same way. The upper is a water-resistant, 100% recycled plastic PET bottle refashioned as ripstop fabric, providing element protection if you need to step out for the morning paper. 40% recycled rubber is used on an outsole providing high traction. The booties are made to slip on and off easily.