SwimZip Little Boy Long Sleeve Sunsuit with UPF 50 Sun Protection Zipper closure Rated SPF 50+ 100% Polyester Material ... Blocks 98% of UVA and UVB Rays! (Called UPF 50+ for fabric) Full Zipper Down Front Makes It SO EASY To Put-On and Take-Off! Diaper changing is a breeze! Soft comfortable material. Highly chlorine and salt water resistant fabric. Super cute, award winning styles! Tagless Neck.