The Baby Mod - Twilite 6" Foam Crib and Toddler Mattress is ideally designed for your convenience and your baby's comfort. It fits all standard cribs and toddler beds. This flat mattress pad is made from 100 percent polyester and RPFB padding. The polyester mattress is lightweight, easy to handle and features non-allergenic materials. The single-piece construction with a firm and even sleeping surface is soft enough for your baby to sleep comfortably. This crib toddler mattress is covered with a water-resistant, triple-laminated cover that is easy to clean.