The mattress protector itself is fine, but it's very loose on our king-size Cloud mattress. Our old mattress/mattress protector fit more like a glove whereas this one does not (it's almost like it's too big or something). It works well enough I guess (haven't had any issues with stains etc yet, but maybe it will come in handy one day). I just wish it was tighter and not so loosey goosey.