The 8-oz. nylon/spandex fabric that makes up this Women's HydroSilk™ shirt will increase moisture wicking. HydroSilk shirts are great layering pieces or perfect by themselves for sun protection. 8-oz. nylon/spandex blend wicks moisture away so you stay dry and comfortable. SPF 50 UV protection guards your skin from the sun's harmful rays. Form-fitting design allows for unrestricted layering. A silky outside and inside feels great against the skin. Designed specifically for a woman's body, this top will become your most versatile layer.