Our Womens ECOTEC PERFORMANCE knit polos are made from moisture wicking and quick drying performance fabric and tailored for a feminine fit. Ecotec offers easy care as the micro-polyester yarn is infused with bamboo charcoal to create a natural sun block (UPF 50+) and odor guard for the life of the garment. These shirts are not coated with the chemicals you typically see with performance shirts found in the market today.