As usual, the mattress protector arrived after two days. Out of the box can be first loosely on the bed in order to unfold the chambers. Have to buy a topper but already used to a firm mattress to "tune" and more comfortable. This works very well. The fitted function does what promises Also when times slept in bed as is. No slippage etc. Cheap alternative when there is no money for degree a new mattress or because you have a new and this would protect sense.
