Washes well and keeps my sons new mattress protected from our dog that always jumps into his bed. I use another top cover made of a breathable material over the top of this to keep him from sweating as it is waterproof and that type of material isn't breathable. I decided it was best to use these 2 different types of covers to protect the mattress after going through 3 mattresses after the top covers I was buying kept coming off the corners while my restless and very mobile sleeping child would cause this to happen and then the mattress wasn't protected. The mattress is quiet as stated in the description.