Membrane equipped to add a water resistant yet breathable barrier between the elements and the rider?s feet. Soft rubber sole for maximum grip. Replaceable strap system. Top grain leather and Lorica construction. Composite inner sole. Removable arch support. Exclusive cam-lock buckle system. Cambrelle lining Slim, cool non-bootie design. Rigid, shock resistant, anatomically shaped heel for maximum protection. Split grain leather inner anti-wear/heat panel. Dirt Wheels: ??a winner for the ATV rider looking for a comfortable, easy to own, and rugged do-it-all riding boot.? BMW Owners News: ?I found the boots to be anatomically designed for a comfortable fit. No pressure points, no rubbing, no binding.? ??these boots are my new favorites.? 4-Wheel ATV Action: ?Comfort is absolutely first rate. The Sidi Discovery is the best ATV boot we?ve ever tested.? ATV Sport: ??we absolutely love how easy the quick release buckles work.?