M&K Men's 3D Padded Bicycle Cycling Underwear Shorts S Waist 28-30 inch M Waist 31-33 inch L Waist 34-36 inch XL Waist 37-39 inch XL Waist 40-42 inch Material: Good fabric 90% Polyester/Nylon 10% Spandex. Breathable fabric provides super flexibility and keeps your body dry. Air permeability 3D pad supply comfort race. Sweat Absorbent Volatility Quick Dry.