[Our perfect set consists of 1 shower phone holder 1 waterproof case 2 suction cups and 2 waterproof adhesive nano-gel pads for a strong & permanent grip. "The suction cups work best on smooth glass-like surfaces and itll function may vary depending on surface texture. Strong durable lightweight acrylic holders." Includes thorough detailed instructions nano-gel pads and strong suction cups for more stability & safety. They can be used for multiple purposes like in the kitchen/bathroom/ shower/ tub your imagination is your only limit. They have a simple and elegant design. Your phone can be used in 6 different positions with this shower drink holder for better placements.]