The Lens Coat Lens Cover set for the Nikon 1.4, 1.7 & 2x extenders protect the extenders with a 100% closed-cell neoprene coat, offering your valuable equipment some resilience to bumps, jars, scrapes & nicks. Easy to install & remove, leaving no residue on the lens, Lens Coat Lens Covers are ideal for nature & outdoor photographers, where the Realtree Hardwoods Snow pattern helps break up the shape of your lens, making it less noticeable to wildlife & allowing you to blend in with your surroundings. Lens Covers are also suited to sports shooters & photojournalists as the neoprene provides a thermal barrier, protecting your hands from cold lenses in lower temperatures. The Lens Coat extender covers features small holes that line up with the red dot indicators to ensure that using & mounting the extenders isn't hindered in any way by having the Lens Cover attached.