This style fits true to size, order your normal size. Upper: Insulated nylon with synthetic leather. Waterproof Lining: Extra warm synthetic fur Lining of insock: Extra warm synthetic fur Insole: Moulded EVA cushioning for added comfort, support and shock absorbency. Removable for easy replacement, if needed. Outsole: Durable TPR with high traction sole engraving Round toe Heel height (approx.): 3.5 cm Heel type: Flat