Thanks to the design of the unique mattress protector from aerosleep your baby is guaranteed a safe and hygienic nights sleep features the open 3d structure of the fabric ensures that the baby can continue to breathe freely and doesnt overheat in the cot the mattress has an absorption layer which absorbs any fluids and the optimal air circulation ensures any fluids evaporate rapidly the bottom layer is waterproof and prevents stains and bacteria building up on the mattress the mattress pr