A lightweight, snug-fit crib mattress is designed with a two-stage dual firmness that provides a firmer side for infants and a softer side for toddlers so that your child stays safe and comfortable as they grow. The breathable surface allows little ones to breathe right through the surface should they end up face down. It also helps regulate temperature so heat can dissipate easily. A waterproof core allows for easy cleaning and prevents moisture penetration. 27 1/2" x 52" x 6". 8 lbs. Advanced 3D honeycomb structure creates a cushion of air underneath the baby for true airflow and breathability. Wipe-clean, waterproof surface. 2-Stage dual firmness and edge support. Polyurethane foam-, vinyl- and PVC-free. Flame-retardant free. 50% polyethylene, 50% polyester. Spot clean. By Lullaby Earth; made in the USA. Kids' Wear.