87% Nylon, 13% Spandex Pull-On closure Fabric: Made of smooth and breathable high elasticity fabrics with 87% Nylon and 13% Spandex; sheer mesh insets and wicking fabric to keep you cool & dry Size: This sports bra provides medium support for A/B/C cup. Size S/4 fits for 28C and 30A/B/C; size M/6 fits for 30D and 32A/B/C; size L/8 fits for 32D and 34A/B/C; size XL/10 fits for 34D and 36A/B/C