The lenscoat lens cover for the sigma 150 600 f5 63 s dg os hsm contemporary lens protects the lens with a 100 closed cell neoprene coat offering your valuable equipment some resilience to bumps jars scrapes and nicks easy to install and remove leaving no residue on the lens lenscoat lens covers are ideal for nature and outdoor photographers where the forest green camouflage pattern helps break up the shape of your lens making it less noticeable to wildlife and allowing you to blend in