OUR CLASSIC 3″ WIDE HALO X3 – PULLOVER HEADBAND WORKS SO WELL, IT INSPIRED US TO CREATE AN ENTIRE X SERIES LINE OF SWEATBANDS. THE THREE FRONT LAYERS OF HIGH QUALITY DRYLINEFABRIC MAXIMIZE SWEAT ABSORPTION. THE SIDE PANELS ARE MADE WITH OUR EXCLUSIVE AIR FABRIC WHICH INCREASES AIR FLOW TO HELP KEEP YOU COOL AND COMFORTABLE.THIS HEADGEAR FOR CYCLING AND RUNNING IS AVAILABLE IN TWO SIZES.