The Mystic Jayde SS Loose Quickdry gives you the style and protection you need on the water. The lycra has factor 50+ UV protection so you are well protected. Mystic has given these t-shirts a bold new design so you can hit the water in style. SS stands for short sleeve, meaning this is a short-sleeved lycra. The t-shirt is made of quick-drying material so it won't stick to you all the time.