Give the mattress of your dreams the proper foundation. This low-profile box spring supports thick mattresses that might otherwise be too tall or cover up too much of the bed's headboard. Incorporating non-yielding high-carbon steel struts, this foundation system does not bend or respond to pressure. The rigid structure transfers all energy back up into the mattress, improving back support and overall comfort. Covered in woven grey fabric, this box spring provides the perfect base for your twin mattress.