This is a physical product that will be manufactured and shipped to your door. This keeps the lens from touching the ground if dropped face down. The cage is super lightweight and allows the camera to be used with all of its normal accessories. To install the cage, remove the lens filter from the camera. Place the cage onto the camera and then thread the lens filter back onto the camera to hold the cage in place. Designed by Luke Edwin. Manufacturing, shipping and customer service handled by Slant 3D