Your little one can dream all night on the Moonlight Slumber Starlight Support Supreme Innerspring with Visco Crib Mattress, but they"d probably never dream up something as amazing as this simple mattress. From the outside, you may notice the welded seams, premium ticking, or medical-grade stretch mesh that covers the exterior. The inside, however, is where the magic happens. At the core is a set of individually covered innersprings, bounded on the side by firm foam side rails. One side of the mattress is designed for infants, with a bed of firm foam to support their little bodies while they sleep. The other side, meant for toddlers, features NASA"s own visco-elastic ""memory foam"", which conforms to your child"s shape so that they"ll always be comfortable and supported while they sleep. All of this is wrapped in a fire-resistant barrier, and is hypo-allergenic and anti-microbial to boot. This mattress has a weight capacity of 250 lbs. * Versatile and modern crib mattress * 2-sided design supports specific ages * Firm side to support infants * Memory-foam side helps support toddlers * Dimensions: 52L x 27.5W x 6H inches