Baffin® Boys' & Girls' Young Eiger Winter Boots are cold rated to -60ºC/-76ºF in active use and will take you through the toughest winter activity while keeping you warm and managing the moisture generated. Durable Nylon ripstop and Pro-tech Microfiber upper Multi-layer inner boot system TPR outsole with aggressive traction Product Features: Upper:Pro-Tech Microfibre, Ripstop Nylon Lining:Multi-layer inner boot Outsole:TPR (Thermoplastic Rubber) traction Base:TPR (thermoplastic rubber) Baffin Boys' & Girls' Young Eiger Winter Boot