Buy from Amazon.co.uk : http://www.amazon.co.uk/gp/product/B007PQCTQA?tag=1001consej026-21
4BB2 Girl's Little UV Swim Shirt - Pink/Black 6-8 Years
UV-Protective
UV Protection 50
Chlorine resistant
All 4BB2 product have a patch on the side that changes colours with the strength of the UV rays