Baby Buns Girls' 2 Piece Swimsuit with Cover Up Butterfly Rainbow Cover Up: 65% Cotton/35% Polyester; Swimsuit: 92% Polyester/8% Spandex Machine Wash Cover up: 65 percentage cotton, 35 percentage polyester. 1 piece swimsuit : 92 percentage polyester, 8 percentage spandex 2 piece swimsuit with cover up butterfly rainbow