The comfortable, supportive core of the Nook Pebble ChangePad is made from CertiPUR-US foam - one of the safest and healthiest foam options available. The contoured edges help keep your baby in place while cradling her in the comfort of the Pebble Wrap. Put an end to laying baby on a cold plastic changing pad. Give her a warm, cozy place to hang out as you change her diaper or get her dressed for the day. The ChangePad core cradles and supports your baby's body while the removable, waterproof Pebble Wrap provides a healthy, soft surface for your baby to lay on.