80% Nylon/20% Spandex. BREATHABLE FABRIC: High-Performance stretchable brush fabric with wicking and breathable function SIZE SUGGESTION: The size and tag are Asian size, that runs smaller than US standard, Please view our size chart suggestion in pictures and Product Description, we advise you to order two size larger. Anti-slip strip design: There is a silicone zone at leg opening to prevent upglide. PROFESSIONAL PROTECTION PADDED: The padded can relieves your fatigue and brings you more sweet protection during riding. Let you to ride comfortably for up to eight hours.