The black Lens Cover for the Canon Extender Set EF II from LensCoat includes a cover for the Canon 1.4 and 2.x extenders. They cover the extenders with a 100% closed-cell neoprene coat, offering protection from bumps, jars and nicks. These coats will allow you to blend in with your surroundings and make you less noticeable to wildlife. They are useful for nature and outdoor photographers, as well as sports shooters and photojournalist.
Two small holes line up with the red dot indictor, making it easy to quickly line up your extender with camera mount and lens with the cover installed. There is also a hole for the extender release. This version is matte black to better blend in where desirable. Or, it can be used just for its protection value.