Blocks stray light from entering the lens No vignetting would show with the hood on Extra protection against accidental impact Hood allows filter and lens cap on: Yes Reversible holder for compact storage: Yes and high quality This lens hood is designed to prevent unwanted stray light from entering the lens by extending and shading of the lens. No vignetting be seen with the hood on. With the extended end of the lens, you also get extra protection from accidental impact. It replaces the original lens hood. Suitable for CAN0N EF 100mm f/2.8 Macro (58mm) as following photo Not suitable for EF 100mm f/2.8L Macro IS lens Colour:black Material:plastic Package Contents: 1 * Camera Lens Hood Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.