• Warm and cozy 15 mm thick sheepskin insoles. • Soft and comfortable, they offer warmth in the cold winter. • Humanized design with ergonomic shape for better support and to prevent injuries. • Non-slip with wool felt layer for better air circulation and less sweating. • Binding stitching for greater durability, they do not become flat with use. • Washable and reusable, ideal for giving new life to your shoes. • Suitable for boots, slippers, work boots, hiking boots, sports shoes, etc.