Serta® and Sleep Express have teamed up to create a collection of mattresses to exceed expectations of traditional kid's mattresses. The unique comfort and support features provide the ultimate sleep system for growing bodies and active minds. The Graduate Series by Serta® Ivy League Ultra Plush mattress set offers softness by using additional plush comfort layers at the top of the mattress. Features include Serta® Supersoft foam and comfort foam for pressure relief and comfort. This mattress set features the Serta® Verticoil Premiere® Innerspring, which offers more support and surface coverage than other value-priced innerspring systems. The Graduate Series collection uses many of the same components found in more expensive beds. The set is available with a 9" foundation.