The CWB AA Boots fit quickly, comfortably, and securely. The Gen6-Plate with Air Shock Heel is the lightest, strongest, and smallest on the market. Heel Lock Hinge has zero heel lift and a taller metal lever. The Superfeet Premium Insole of the AA boots has a patented stabilizer cap and SOS shock absorption heel for optimal shock absorption. Other features include replaceable interlocking Velcro straps, 2 sets of achilles pads, and gorilla grip. Men's sizes: XS(6-8), S(8-9), M(9-10), L(10-11), XL(11-12), 2XL(12-13).