Give your child cleaner, safer sleep with a waterproof twin mattress that’s MADE SAFE® certified non-toxic, supportive and allergy-friendly. The Lullaby Earth Dream Easy mattress was designed specifically for kids, as a healthier and more practical alternative to traditional mattresses. This means the elimination of materials like vinyl/PVC and flame retardants! It also means breathable AND waterproof, with a removable washable cover.