The Sound Sleep Crib CushiTM is a newly patented product that replaces crib bumpers. It offers a whole new look at an infant's or toddler's sleeping environment. This mattress topper works w/a standard crib sized mattress and gently keeps a child centered in their bed w/o any loose props. The design of the non-toxic foam inserts slope inward toward the center of the bed along the inside walls. These foam shapes fit into a cover and sit directly on top of the mattress. The specially designed sheet fits tightly over the foam shapes AND the mattress combined, w/the opening hidden underneath. There are no ties or loose bedding for a child to be caught in. As it does not attach to the frame, when the child is older and transitioning to a larger bed, the Sound Sleep Crib CushiTM stays w/the mattress in the toddler bed and NOW helps to keep the child from rolling out during sleep. The child can get in and out of bed independently, but has less of a chance to fall out during rest.