Spinal Solution, Twin Size Assembled Orthopedic Mattress With 4-inch Box Spring Sensation Collection Orthopedic type mattress 39-inch wide. Good for a kids bed Fully assembled mattress and box spring are ready to use Gentle firm tight top mattress Innerspring Mattress with 357 verticoil unit Mattress reliefs pressure points to reduce tossing & turning Strong & sturdy box spring Box Spring is made of light yet dense lumber which prevents the box to loosen up and crack Made in USA