The mattress is comfortable and was delivered to my home in no time. But one of the reasons I picked out this mattress was because I thought it had removable/ washable cover. When we got a stain on the mattress and I decided to wash the cover, I found out that once you open the zipper, you get straight to cotton ball like filling of the mattress that's actually sewn into what I thought was removable cover. very deceiving - what's the point of having a zipper at all?