THE NORTH FACE THERMOBALL TRACTION BOOTIE TNF Black Upper: Water-repellent 100% recycled PET ripstop, ThermoBall™ Eco insulation Bottom Unit: 20% recycled rubber outsole Unisex size Size: US8 / 25.0cm These booties feature ThermoBall™, jointly developed by The North Face and Primaloft. This ball-shaped synthetic insulation mimics the loft of down, offering durability and waterproof characteristics. They trap heat and provide excellent insulation, comfortably regulating warmth. They slip on and off easily without fasteners. These are a great pair for everyday wear, not just for outdoor activities. Water-repellent, insulated nylon upper Synthetic insulated filling for warmth Non-slip rubber sole with logo pattern No box Prices fluctuate depending on the current market. Purchase at a good time!