The Digital Camo LensCoat Canon RF 800mm f/5.6 IS Lens Cover offers your valuable equipment some protection from scrapes and bumps, preserving its resale value. It also helps break up the shape of your lens, making it less noticeable to wildlife. This neoprene cover acts as a thermal barrier, making the lens more comfortable to handle in hot and cold temperatures. It also features clear plastic windows over the auto focus, image stabilization, and distance limiting controls.