Patent-pending double zipper allows for adjustability in front closure. Convenient snap at the top makes it easier to zip it up. Premium fabric blend (95% nylon/5% spandex) is silky soft, strong, antimicrobial, breathable, dries quickly and maintains shape. Sporty yet practical racerback design keeps straps from falling. Adjustable straps with medical grade hook-and-loop creates a customized fit. Seamless tag eliminates scratching. Universal band sizing. White in color. Extra large size's band is 40 – 42 inches and measures 15.5 inches when fastened and laid flat.