The LensCoat Lens Cover for Canon 70-300mm f/4.0-5.6 IS Zoom Lens covers the lens with a 100% closed-cell neoprene coat, offering protection from bumps, jars and nicks. Available in different finishes, this new coat will allow you to blend in with your surroundings. Ideal for nature and outdoor photographers, and for sports shooters and photojournalists.LensCoat Lens Covers also provide a thermal barrier, protecting your hands from cold lenses in lower temperatures. They are easy to install and remove, leaving no residue on the lens. LensCoat Lens Covers are also waterproof, providing protection in harsh conditions.This Lenscoat features access to the auto focus and IS controls. A notch on the last segment lines up with the white dot indicator, making it easy to quickly line up your lens with camera mount even with the cover installed.