Others say...

"Terrible material"
this product is terrible, although at first it promised to be cheap and usefull, the fact of the matter is that this product is quite fragile and easily breaks
I had mine for two days, bumped lightly into a padded car chair, and it snapped off, without hope of repair

"Case"
Durable case. Protects from casual misshandling. You still need a screen protector with this case.

"Decent protection"
Doesn't cover or protect screen but does offer a better grip and protects rest of phone.

"Decent case; Crap belt clip"
The case I received is black rubberized on white plastic, which is visible at the seams. Nothing a sharpie wouldn't fix though. I do agree that the case gives the phone a more solid feel, and have had absolutely no problems with the slide binding or the charger not fitting. The belt clip is disappointingly bulky, but I was willing to try it... The actual clip stays on the belt, and you can release the phone from it with a button push. This leaves a gear shaped projection on the back of the phone.

The first night of my test period I was getting out of my car and heard it crunch. The gear had broken off of the case leaving a half inch diameter hole centered in the back! Luckily there were no other cracks or flaws which would ruin the back. I'll keep using the case, to protect the phone itself, but it'll be in my pocket from now on.

"Sony W580i cover/protector"
WORKS GREAT! But after just a few days the rubberized finish has started flaking off at the edges. It PROTECTS my W850i, just doesn't look nice anymore!