Designed to protect your lens while using it. Functional in all situations, whether it is an intensive hiking experience, a studio shoot or at home photography: your lens will be protected against bumps and scratches. Included are a lens Ring and a Lens Bumper. The Lens Ring is flexible and stretchy. The Lens Bumper is specifically manufactured per diameter size. Since the bumper will be screwed in via the thread, the bumper is not comptabile with the supplied lens shades from the manufacturer. What's in the box Silicon Lens Protector