Bogs Men's Bozeman Tall Waterproof Warm Insulated Winter Work Rain and Snow Boot 100% Textile/Synthetic Imported Synthetic sole Shaft measures approximately 13" from arch Boot opening measures approximately 15" around Constructed with 7MM Neo-Tech Waterproof Insulation. Comfort rated to -72 F/ -60 C Durable hand lasted rubber with four way stretch inner bootie Rebound technology provides a shock absorbing cushion throughout the entire footbed and gives responsive support that lasts the life of the product. Lined with Bogs Max-Wick to evaporate sweat and footbed with dual density EVA, Ortholite, and DuraFresh for optimal comfort Non-marking and self cleaning Bio Grip chemical and slip resistance outsole