The Ashley 12" Hybrid Ultra Plush Bed in a Box features the support of coils with the comfort and firmness of high density foam. Gel memory foam offers extra support and cushioning for pressure relief and a restful night of sleep. The knit cover is hypoallergenic, so allergy sufferers can now enjoy peaceful night of undisturbed sleep. Plus, since this mattress arrives in a box, setup is easier than ever. Simply remove the plastic wrap and unroll. You'll have endless comfort in a matter of minutes.