The Run Performance Long Sleeve Shirt is made with ultra-sweat wicking fabric to cater to runs in hot weather climates, the tapered design and dropped back hem allows you to naturally ventilate during your run keeping you cool in the most extreme heat conditions whilst also allowing more cover. Properties:Sweat Wicking |High Coverage |Ultra-Breathable |Odor Control |Anti-Bacterial |Anti-UV |4 Way Stretch  Model wears a Size Small.