The JJC LH-J40, which I got, was supplied by Enjoyyourcamera in a stylish small packaging, which I did not expect at cheaper chinaware. The first few times top screws on my lens went so hard, so that I or similar damage to the lens thread feared - yet fortunately unfounded. If you do not need the Geli, they can fix the way to save space upside down on the lens.
Why use a Geli?
Although Olympus says that is not scattered light sensitive 14-42, from experience with DSLR lenses I know, however, that one still gets a bit more brilliance in his pictures when using a Geli as less stray light side falls from the front lens , Since the JJC LH-J40 also around projects beyond the front lens, it protects them from bumpy and unwanted contact with objects that could cause damage, scratches or grease stains.
So for me, a useful accessory!