SwimZip Little Boys' Short Sleeve Rashguard Zipper UPF 50+ Zipper closure Rated SPF 50+ ... 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! Soft comfortable material. Highly chlorine and salt water resistant fabric. Super cute, award winning styles! Products featured on National Television show to audience of over 6 million people. Thoughtful features like: Tagless Neck, No Chaffe Flat-Lock Seams, Zipper Garage, Protective No-Pinch Zipper Flap, UPF 50+