Very high quality!
JJC LH-86 Lens Hood (Compatible with Canon ET-86 Lens Hood) for Canon EF 70-200mm f/2.8L IS USM Lens.
JJC Lens Hood, like all other Lens hoods, is primarily designed to prevent unwanted stray light from entering the lens by extending and shading the end of the lens. In addition, since the end of the lens is extended, you also get the added benefit of some extra protection from accidental impact.
Reviews JJC LH-86 Lens Hood (Compatible with Canon ET-86 Lens Hood) for Canon EF 70-200mm f/2.8L IS USM Lens (White)