Stay cool with the Coldblack® Polo Shirt from Vertx. Exclusive coldblack® technology infused into a 30 SPF moisture wicking Polyester fabric reflects 80% of the sun’s UV rays, lessening the absorption of heat while wearing dark colors. Coldblack® technology allows sunlight to reflect instead of absorbing into darker colors so you can be as comfortable in a dark shirt as you are in a lighter color shirt. The athletically patterned silhouette features raglan sleeves and a no-roll collar to achieve a comfortable, professional look.