The DeluxGear Lens Bumper (X-Large) is basically a Lens Guard without the enclosed dome end. It has neoprene inside and tough Santoprene exterior. The Lens Bumper allows you to shoot without taking it off of the lens. That also means that you can shoot with your lens hood in use. Or, if you're not using a hood, you can keep the Bumper on the lens at all times.