The Realtree AP Snow Lens Cover for the Canon 500mm f/4.5 Lens from LensCoat covers the lens with a 100% closed-cell neoprene coat, offering protection from bumps, jars and nicks. This coat will allow you to blend in with your surroundings. It is useful for nature and outdoor photographers, as well as sports shooters and photojournalists. Realtree AP Snow allows your lens to blend in with snow-covered trees, bushes and rocks.