In a nutshell
Certainly not! The mattress protector will protect your mattress as well as your baby. All it needs is the AeroSleep fitted sheet. This fitted sheet guarantees the breathability of the mattress protector.
Any other cloths or sheets will largely obstruct the air permeability.
In more detail
The AeroSleep mattress protector is waterproof and therefore protects your mattress against moisture and stains. The 3D technology of the mattress protector also offers extra benefits, because it also protects your baby!
Why should I combine the mattress protector with an AeroSleep fitted sheet?
The AeroSleep fitted sheet has special perforations that allow moisture to flow to the mattress protector's absorbent layer. Your baby will stay dry and be able to breathe freely, even after bringing up some milk or experiencing a nappy leak.
Other cloths or sheets do not have these perforations, and will absorb moisture. This closes the open structure of the fabric, so that the breathability of the mattress protector is partially lost.
What about brought up milk and leaking nappies?
The AeroSleep mattress protector and fitted sheets are both machine washable at 60°C and dry quickly.