Combination leather and synthetic upper material. Warm lining helps to maintain temperature. Removable felt and aluminium insole conserves heat and prevents cold penetration from the sole. Padded heel for comfort. Double velcro fastening for optimum fit and ease of getting on. Higher fitting around the ankle provides excellent ankle support. The deep toe box makes this ideal for feet with high arches. Substantial non-marking, rubber tread that doesn't leave marks on the floor. Average to broad fitting.