The seventh picture is a detailed sizing chart. Please According To Our Size Chart Before Purchasing, If You Have Wide Feet, We Suggest You Choose One Size Larger.Material: The Upper Is Designed With Synthetic Mesh And The Sole Is Designed Wear-Resistant Nylon With Cleat, Breathable, Lightweight , Non- Slip, Comfortable For The All Day Wear.PEDAL COMPATIBILITY:Cycling shoes are unisex, and compatible with 2 or 3 bolt cleat/pedal systems including Look Delta, SPD, SPD-R & SPD-SL and exercise bike.The Upper Is Designed With a Portable Rotating Buckle, Which Is Easy To Put On And Take Off, Turn The Buckle Clockwise To Tighten The Shoelaces, Pull The Buckle Outward To Loosen The Shoelaces.Ours Cycling Shoes Design Based On An Ergonomically Molded Which Has Good Performance In Cushion, Perfect For Road Riding, Commuting, Touring, Exercise bike Class, Mountain Bikes, And Indoor Exercise Bikes.