I was looking for disposable waterproof mattress covers to protect the new gel memory foam mattress I bought from Wayfair.  I saw the description of this cover “1 set of 30” at a great price, so I ordered the “set”.  I was expecting 30 disposable covers when the package arrived, there was only one cover.  I was disappointed and was getting ready to return it, but decided to take a closed inspection.  It is a very well made to last cover thick and soft deep pockets to fit well and securely over the mattress it will definitely be able to protect the mattress and keep the mattress in new conditions. I decided to keep it.