LensCoat LCN300AFSIM4 Nikon 300 f/2.8 AFSI Lens Cover (Realtree Max4 HD) Protection from bumps, dings, nicks, and the elements like water, sand, dust etc. Camoflauge patterns help conceal by breaking up the shape of the lens Neoprene acts as a thermal barrier protecting hands from hot and cold Slides on like a sleeve Made in the USA