JW LH-83D BLACK Reversible Lens Hood For CANON EF 100-400mm f/4.5-5.6L IS II USM Lens w/ CPL ND Filter Adjustment Window replaces Canon ET-83D + JW emall Micro Fiber Cleaning Cloth Comes with a filter access window for CPL, ND filters adjustment Blocks stray light from entering the lens;Reversible for easy storage Will not affect the use of lens cap;Non-glare matte finish prevents reflections No vignetting will be caused with the hood on Extra protection from accidental impact