SunSkinz Kid Rash Guard UV Protective Long Sleeve UPF 50 Shirt Swimwear SPF 100 Blocks 97.5% Of Rays, Broad Spectrum UV Protection: Provides UPF 50 equivalent to SPF 100 protection Lightweight material, 55% poly and 15% spandex: 4-way breathable comfortable stretch fabric, Tightly woven high-density fabric, Quick Dry Approved by Melanoma international foundation All season, withstands chlorine and salt water: Great for sporting & sailing, Made in Cambodia Girl unstretched chest: Size 6  27, Size 8  29 Girl chest continued: Size 10  30, Size 12  32 Boy unstretched chest: Size 6  26, Size 8  28