Designed to protect your lens array from damage, the aluminum Defender Plate for iPhone 15 Series LiteChaser Pro 15 Cases from PolarPro attaches easily to the back of the case with the press of a button. It's the same plate that comes with a LiteChaser Pro 15 case, so you can use this to replace a lost plate or to keep one on hand in case you do. The plate is ideal for shielding the lens from rocks and debris on the bike trail, or from anything else daily life throws your way.