Not only is sleeping on the Moonlight Slumber Starlight Support Supreme All Foam with Visco Crib Mattress like sleeping on a cloud, it"s like sleeping on a waterproof cloud made out of miracles that is also microbe-free. The centerpiece of this versatile mattress is the innovative two-sided design. The infant side is padded with high-density, extra-firm foam to give your tiniest ones the support they need while they get some sleep. The toddler side uses visco-elastic memory foam, originally developed by NASA, conforms to your child"s shape, giving them comfortable support throughout the night. This mattress has welded seams, is anti-microbially treated, and is also hypo-allergenic as well as being flame-retardant. Supportive side rails help this mattress keep its shape, and the cover is a safe and durable medical-grade stretch mesh. You shouldn"t be surprised to find out that this mattress is also waterproof, non-toxic, and phthalate-free. This mattress has a weight capacity of 250 lbs. * Crib mattress lets science help you protect your child * 2 firmness levels for newborns and toddlers * Hypo-allergenic, anti-microbial, and flame-resistant * Features visco-elastic memory foam * Dimensions: 52L x 27.5W x 6H inches