The protective cover is made of good-quality Premimium what you can, however, expect for this high price. It protects the body of the grill - they haven `t is about 10cm too short, what other Rezensisten have criticized traveled. Ie the front leg is about 10cm free and the wheels are only half covered and completely free because the shell is "hangs" in light Winböen between wheels and grill. So does that get dirty in the summer, the parts exposed. So far she is keeping dry, but I have not yet tested the grill after heavy rain. I'll do that on occasion and make an update.
For the lack of 100% Paussgenauigkeit I prefer considering the premium entitlement and the premium price from two stars. However, I have not seen any alternatives that could be used for the OTP 57 ....