Nevertheless, I have to cover now but sent back, although he works properly on said EZ-lens! Why?
1) The protective effect is stop but only limited, as precisely a stable cover protects the lens glass, but only very thin plastic slats that are like to be pressed or pushed in a backpack by keychain or coolies.
2) I was hoping that the lid also works on my other frequently used Panasonic lenses 12-32 and 14-42 PZ. But this is not the case, although the cover, thanks to 37mm thread fits to both lenses. At 12-32 but showing significant vignetting (shadowing) in the corners, at 14-42 PZ the lid open not even the fins! Since I like to use the small Lumix Power Zoom for video sequences, I have now even decided the whole Olympus Lens to sell again ...
Of course, the latter two criticisms reflect only my subjective point of view! Since Olympus or Amazon have not promised too much in the description (and I appreciate the manufacturer's imagination), I draw from only one star (for the price), ie a total nevertheless "positive / like that!"