Pure has 200 Center Zone coils designed to keep babies more centered on the crib mattress as they sleep and away from the edges where most accidents happen. It has a 2 inch, natural New Zealand wool based perimeter edge support, to help support their weight as they begin standing. The infant side is made with a double eucalyptus based pad. The toddler side has the same eucalyptus based support with an added layer of GOTS certified organic wool. The cover also made with GOTS certified organic cotton, is removable and machine washable, and water repellent.