The Thin Blue Line Card Holder is perfect for those who don’t want to carry around a wallet. 3M adhesive backing ensures that the card holder firmly stays on your phone without worry of it falling off. Compatible with All iPhones and Androids, sticky enough to firmly hold cards or cash on the back of most phone cases as well. With a simple and sleek Thin Blue Line American Flag on it, this is an essential item for any Law Enforcement Officer or Supporter.