Our popular Sunstopper base layer is back and better than ever with updated styling and exciting newcolours. Same great performance features but now with a raglan-cut sleeve for extra comfort and breathable tech mesh Panelling in all the places you need it most. AriatTEK’…‚® Heat Series technology keeps you cool when the competition heats up. Moisture Movement Technology keeps you drier. Sun Protection Fabric with UPF rating of 45 provides protection from ultraviolet rays. Fabric inhibits the growth of bacterical odours. ClimateTEK smart technology regulates the bodys temperature whatever the weather. Breathable mesh panelling. Stand collar with 1/4 zip styling.