These short sleeve ShredFin performance shirts featuring our Contourz pattern are made of the most technologically advanced dri-fit fabrics available. Engineered specifically to keep you comfortable and protected from the sun while on the water. FEATURES: 100% Polyester ShredTek material Breathable, moisture-managing interlock fabric Fresh assurance with anti-bacterial treatment UV Protection / UPF 50+ Sublimated logo/graphic (not screen-printed) for extra comfort and durability ANTIBACTERIAL TREATMENT Prevents bacterial growth and stops fabric from developing odors. MOISTURE MANAGEMENTTransports moisture away from the skin to the garment&';s outer surface. UV PROTECTIONTight construction and color of fabric blocks UV radiation from passing through and reaching the skin. ODOR CONTROLAdvanced anti-microbial fabrics wick perspiration and delivers enhanced comfort and performance.