These pedals provide a flat surface for clipless pedals for just cruising around in normal shoes.When you ride to work or not convenient to wear cycling shoes（Cycling shoes are not convenient for walking），You can wear your regular shoes, and then attach the clipless pedal adapter to the shoes. This riding effect is like wear your riding shoes. You only need to untie the shoulder strap when you arrive at your destination. Material: aluminum alloy CNC machining Weight: 140 grams/pair Size: 90mm*90mm*6mm Packing List: 1 pair clipless pedal adapter(NOT included pedal cleat set) 1 pair straps