Platypus Australia: Our sporty and stylish Jammer with printed panel protects skin from the sun's damaging UV rays allowing boys to be active all day long. Over the knee coverage protects the legs all day long with less area to apply sunscreen! Now that is a winner! UPF 50+ offers excellent sun protection, the highest possible, blocking out more than 97. 5% of the sun's harmful rays. Fabric is a high quality Matt Nylon LYCRA XTRA LIFE , ultra chlorine resistant, breathable and quick drying. Swimming shorts80% Nylon and 20% LYCRA XTRA LIFE Hand wash only Shop At House Of Fraser