The Maxi Air Cool topper helps draw moisture away from the skin helping to keep baby cool to prevent them from overheating Includes waterproof gliding mattress protector / sleeve The core of the mattress is mini bonnell Spring units encased in a high density foam material to offer maximum support and durability Zip off cover which can easily be removed and replaced for washing 5» Super
thick Excellent hygiene, and hypo - allergenic properties.