Our My First Porta-A-Crib Mattress Pad is designed with your child's safety in mind. Firm and supportive, this pad offers an extra-comfortable surface for babies while playing or sleeping in their port-a-crib. It helps promote a restful sleep while understanding that your child is not the same size as an adult. They need the proper size to achieve the same good night's sleep to promote growth and learning. Our commitment to provide a healthy sleep environment for your child makes for a happier home, one bed at a time. Constructed of premium CertiPUR-US certified flexible polyurethane foam to keep your child safe and healthy. Fits many popular portable crib sizes so you can take it with you when you travel. With our non-skid lining, you can rest assured the mattress will stay in place. Portable crib mattress pad has a waterproof removable cover making it easy to clean and for easy maintenance.