I bought it for the Weber Spirit II 310 and it fits perfectly.
Excellent quality, easy to put on and take off.
Value for money

Ideal for a grill with 3 burners.
Thick fabric that fits well on the grill. I have the Unimac grill 661314 and I decided to try the cover as well. I hope it withstands the test of time.

Very high quality, thick and waterproof. I have a Weber Spirit with 3 burners and I simply closed the side "table" to fit it. The disadvantage is that it doesn't reach all the way down, but it's not that important for me, and the real downside is that it doesn't have loops to tie it down or something to prevent the wind from taking it. It kept getting blown away constantly and I had to come up with makeshift solutions.

I have it for a year, it has endured everything, just now it has lost a bit of its color, it may be due to dirt

I bought it yesterday. It covers the entire grill and the material seems to be of good quality. Especially where I have the grill, it will be tested in the sun and in case of rain. First impressions are very positive though.