Vertx Men's Long Slv Action Polo in Navy order now from the military specialists. Vertx polo's are made with a unique material called coldblack. This material is named among the Top Innovations 2008 by Popular Science. How coldblack Works: Dark colours heat up stronger when exposed to direct sunlight compared to light colours. This no longer needs to happen! Now there is coldblack, a special finishing technology for textiles which reduces heat build-up and provides reliable protection from UV rays. Comfort: The Vertx polo is 100% moisture wicking polyester and utilizes the exclusive, patent pending coldblack technology from Schoeller Technologies AG. coldblack reflects up to 80% of the sun's rays making dark colours feel light. Mobility: This athletically patterned polo features a raglan sleeve for ease of movement. Durability: The no-fade performance fabric and the non roll collar with stay looks professional enough for duty wear wash after wash. Features: Performance 6.5 oz pique knit fabric * Mic tab or sunglass loop at base of placket * UV protection of at least 30 SPF, and reflects up to 80% of the sun's rays * 100% moisture wicking.