Replaces Olympus LH-40B lens hood, compatible with Olympus M.Zuiko Digital 45mm f1.8 Lens
Shades the lens from stray light, improving contrast and image quality
In inclement weather, it can assist in keeping moisture or wind-blown debris off the lens
Protects the front barrel from the inevitable impacts against walls, door frames, and other real-life obstacles
Reversible to stay on lens