i play. Baby & Toddler Girls' Swimsuit Set with Built-In Absorbent Swim Diaper Top: 82% Nylon, 18% Elastane; Diaper: 100% Polyester Imported Machine Wash All-day sun protection- wet or dry! quick-dry material for active play and helps provide ultimate, secure protection for babies and swimmers Top has flat lock seams for extra comfort with cap sleeves for freedom of movement Built-in, lightweight diaper encourages swimming and no other diaper necessary. Economical and creates less waste- use and reuse UPF 50+ excellent sun protection Formaldehyde free and azo-free dyes