Extremely cold weather calls for Intrepid snow boots. Handcrafted with a recycled nylon upper, recycled fleece lining and innovative Ortholite footbed, traverse icy excursions with the comfort and support you can count on. The water-resistant shell and internal waterproof membrane ensure that these boots are 100% waterproof, and the elastic cord and button along the top line retain heat. Constructed with an FSC-certified natural rubber outsole from forests independently audited to Forest Stewardship Council standards, these boots can be worn at temperatures as low as -20°C (-4°F). High insulation -25°C / -13°F Lining: 100% polyester (recycled polyester) Ortholite foam insole Outsole - FSC-certified natural rubber Upper: 50% recycled nylon; 35% CPU; 15% TPU Waterproof