Rep' your favorite number, support your favorite superstar, or celebrate your age to the world. Makes a great design for baseball, basketball, soccer, football, hockey, volleyball, softball and more. Grab yours today! Show off your favorite number in style. Fantastic for sporting events and stocking stuffers. Great for athletes, sports players, coaches, team moms, and fans! Excellent for men, women, boys, girls. Adhesive backing attaches the PopGrip to your case or device. Will not stick to silicone, leather, waterproof, or highly textured cases. Works best with smooth, hard, plastic cases. Not compatible with wireless charging Printed top is swappable with other compatible PopGrip models. Just press flat, turn 90 degrees until you hear a click and remove to swap.