Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Quality Inflatable mattress

I am very impressed with the quality of the coleman inflatable products, this one was no exception. I loved the large valve to make inflation and deflating very fast. The material is textured, so it doesn't stick and squeak like the cheaper ones do.I gave this only 4 stars rather than 5 though, because I could not get the pillow part of the mattress to attach correctly. It is attached at the top by a noninflating section and flips over and should attach so it stays down on either side. I could not attach it on both sides, it wasn't wide enough. Perhaps I should have tried to attach it before inflating, but I think it would have just popped out anyway. It wasn't a huge issue becuase when you are laying on it, the pillow stays in place anyway.Overall, a great product and I will buy more coleman inflatable products for our next lake vacation.