Wasp’s WHC25 direct thermal adult PE backing wristbands are 11.5-inch x 1.125-inch with a printable area of 10-inch x 1.125-inch and are equipped with a 1-inch core. The wristbands are made with a polypropylene material on the front and a polyethylene backing with a tamper proof, non-tapered, permanent acrylic adhesive closure.