87% Nylon, 12% Spandex, Inner Cup Lining 100% CottonWear as sleep bra or leisure bra, and also great to be used as soft bra after breast surgery100% cotton inner cup lining with pouches to hold removable pads, one pair of pads includedM equivalent to 30-32 , L to Band 34, XL to Band 36, XXL to Band 38.Free cup size fits up to C cups; if you normally wear D cups or above, order one size up.