Spandex, Nylon, Zipper closure Material :80% nylon, 20% spandex. Soft comfortable material. Highly chlorine and salt water resistant fabric Design: Bright colors and interesting patterns, cartoon surf dinosaurs, beautiful coconut trees, add a rich color to your little guy's travel, enjoy the summer, enjoy the beach Rays Function :water, sweat, friction high color fastness, No fading, durable wear like new. No formaldehyde, no odor, no carcinogens. Care for your baby's healthy growth, we pay equal attention with you. The zipper is convenient for the child to put on and take off. Zipper flap for protection. Every little detail is for your baby. Sun Protection_ Our one-piece swimsuits are made of UPF 50+ fabric .It can Blocks 98.5% of UVA , UVB harmful UV radiation. When your little guy is enjoying the fun of swimming, you are no worried about UV damage. Because our swimsuit will protect your little guy from the sun's UV rays