Zunblock UV- set (long sleeve and shorts) has UV protection UPF 50+. The zipper has a soft cover on the inside and sits on the stomach. The UV shirt is easy to put on and off and there is room for diaper or baby swim pants and shorts if needed. Zunblocks UV clothes have a slim fit to be comfortable even when they are wet. Zunblock has achieved the best test in independent tests, on test facts, of UV protective clothing for children.