What's it do? Product Description Iso-Chill technology feels cool the instant you put it on. Like an ice pack built right in, its ribbon-shaped nylon fibers disperse heat, while titanium dioxide—the stuff in sunscreen—pulls away heat. You feel cooler, so you can play longer. Built-in UPF 50+ sun protection—recommended by the Skin Cancer Foundation Iso-Chill fabric helps disperse body heat, making it feel cool to the touch Mesh back panel for ultimate breathability Dropped hem with side vent Style #: 1355396 100% Polyester Imported Loose: Fuller cut for complete comfort. Machine wash cold with like colors Do not bleach Tumble dry low Do not iron Do not use softeners Do not dry clean