The Vertx coldblack polo allows users to stay cool while wearing dark colors in the sunlight. Exclusive coldblack technology combined with moisture-wicking fabric reflects 80% of the sun's UV rays and lessens heat absorption ” resulting in a light, breathable shirt ideal for warm weather missions. Streamlined design, convenient sleeve pockets for pens and pencils, and a no-roll collar give this shirt a professional look with all the tactical functionality to get the job done.