Lowa Mountain GTX boots are a top class model suitable for even the most diificult of terrains, with a Cambrelle & Gore-Tex combination lining. Features: Sturdy water repellent 2.6mm full grain leather. Vibram Tsavo sole for excellent grip on all surfaces. Midsole made from polyeurethane for cushioning & comfortable walking; crampon compatable (strap on) technology. Lowa climate control system & climate control insoles. Lowas come in half sizes to ensure a precise fit.