Amazon calculates a product’s star ratings based on a machine learned model instead of a raw data average. The model takes into account factors including the age of a rating, whether the ratings are from verified purchasers, and factors that establish reviewer trustworthiness.
This HOMEIDEAS 4 Mil Extra Thick Plastic Sofa Cover is exactly what it says. It's a thick piece of plastic! We used it to cover a small outdoor patio set from the elements (2 chairs and small ottoman). But there is no way to tie it down or close it. It's more of a covering which doesn't work well against the wind. So we had to tuck the bottom of the plastic underneath the chair legs so it wldn't fly away. It's held up against rain and snow already. I would think this would be best used for furniture and other things that are being kept in storage or being moved so dust and dirt do not settle on them. Might also be useful to cover furniture if you are doing some type of painting or renovation. But just know that it's just a very thick heavy duty piece of plastic. We will eventually get a patio furniture cover to replace this. This should be a temporary cover.