Flap Happy Rash Guard With Diapered Swim Trunk Set 2 Pieces, UPF50+ Rash Guard Top with UPF 50+ Diapered Swim Trunks 80% Nylon, 20% Spandex Rashguard with 100% Poly Microfiber Liner 100% Cotton with polyurethane Hand wash cold, no bleach for Rashguard. Machine wash cold, line dry for Diaper Trunk Fast drying