The Wave Brain UPF SS Tee delivers 50+ UPF protection and O'Neill Hyperdry moisture-wicking technology. Men's Standard Fit Short Sleeve Tee 45% Recycled Polyester, 45% Polyester, 10% Elastane, Weight: 170 GSM 29'' HPS Length 50+ UPF O'Neill Hyperdry Moisture Wicking Antimicrobial Screenprint on Left Chest and Back