Featuresr size is optional lcn meuwaist 260 xlcn leuwaist 276 xxlcn xleuwaist 291 xxxlcn xxleuwaist 307 xxxxlcn xxxleuwaist 323r comfortable material 82 polyamide 18 spandex keeping you cool and sweat freer good elasticity speeding up your cycling by decreasing the friction with your bodyr 25mm thick silica gel cushion keep you comfortable even in long distance ridingr silicone strap with anti slip strap design inside hem