The Cosmic Tides Long Sleeve is a great boy's UV rash vest designed in a tee fit for a comfortable and casual result in and out of the water. Featuring an excellent sun protection rating of UPF 50+ and a stylish front and back print. Plus, Surflite fabric is light, comfortable and also chlorine friendly, so it keeps its structure, shape and performance quality even when worn in chlorine swimming pools and wave pools.