Ekouaer Seamless Comfort Racerback Removable Padding Sports Leisure Sleeping Bra 92% Nylon+8% Lycra Criss cross style are made of 87% Nylon+13% Lycra,other style are 92% Nylon+8% Lycra.Quick drying;Pullover elastic closure Built-in pockets for removable cups;Seamless Construction for chafe-resistance and comfort Light-impact support ideal for yoga, pilates or weight training.Wirefree also make it a good sleep or leisure bra 2 layer front for modesty,criss cross and racer back option gives more support S size for US 34A,34B,34C,34D,36A,36B; M size for US 36C,36D,38B,38C,38D,40B; L size for US 40C,40D,42B,42C,42D