The Dream On Me Nirvana 6 in. 96 Coil Spring Crib and Toddler Bed Mattress will have your baby firmly supported in comfort throughout the night. Constructed of quality materials, this durable mattress features interwoven, heat tempered coils, two hypoallergenic insulating foam layers, and a lock-stitch venting system. The waterproof cover is easily cleaned with warm water and helps the prevention of mold, mildew, and odor.