Rotating Buckle Design --- Slip-on closure with adjustable rotating buckle and hook & loop allows you to quick and easy on and off and prevent falling off. Imported Rubber sole Road Cycling Riding Shoes - 3 Straps- Compatible with Peloton Shimano SPD-SL & Look ARC Delta Perfect for Indoor Road Racing Bikes . Material --- PU upper and nylon sole make this men cycling shoes thin and light, more durable. Breathable design --- There are many ventilation holes on the upper and sole of this road biking shoes to keep the feet comfortable and breathable during riding. Comfortable --- On the inside of this SPD-SL cycling shoes is equipped with protective knitting, which is breathable and comfortable. Perforated vents on the outside can keep ventilated and not sultry. Suitable for road and mountain biking --- The nylon sole is compatible with road bike cleats and mountain bike cleats, making it perfect for different occassions, such as road riding, mountain biking, and indoor cycling class.