IPhone Pro smartphones design. This simple and stylish sierra blue color for 13 Pro and 13 Pro Max is a beautiful blue color. The design features clear flat aesthetic blue on gradient sierra blue color background This sierra blue is a nice looking one for Phone 13 Pro sierra blue and Phone 13 Pro Max Sierra Blue. It is a flat artistic graphic blue pattern. 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.