Kings Brand Furniture Twin Size Steel Day Bed (Daybed) Frame with Pop Up Trundle & Mattresses This listing includes twin size day bed , Trundle and 2 Twin Size Mattresses. The daybed includes a platform with metal slats for support, Designed for long life and safety, Collapsible trundle fits beneath daybed. Trundle lifts up easily, Ideal for children, sleepovers and guests. The two beds are the same height when opened, Trundle Beds are a smart choice for many reasons. The metal trundle bed set can be used in the following ways: Space Saving Single - Leave the trundle rolled under the high rise frame and you literally add square feet to your home. Roll the trundle out but leave it in the down position, Or it can be lifted to the same height as the daybed. The metal frame has holes on the front and back so a headboard and footboard can be attached. Simple assembly required. Dimensions: Daybed: 77'' L x 41'' W x 17''H. Trundle : 72 MATTRESSES: 312 innerspring coil unit, with 13 gauge unit and 6 gauge border, 1" stitch shoddy pad on each side, Damask fabric-class B, Quilted with 2 x 1/2" Polly Foam. Height between 7" and 8".