PRESSURE-RELIEVING RELAXATION – A unique, curved design lets you assume a neutral, zero gravity position, which has been proven to take stress off the spine and joints, improve circulation, decrease swelling and reduce heartburn and acid reflux DENSE FOAM CONSTRUCTION - One-of-a-kind shape is formed using durable high-density foam layers which are softer beneath the head and spine and firmer at the legs and base EASY CARE COVER - A zip-on cover is made of a polyester/spandex blend and can be easily spot cleaned with a mild soap and damp cloth; a pillow is included as well CERTIPUR-US CERTIFIED - All foam is of the highest quality and is CertiPUR US Certified for durability, performance, and content.One-year limited warranty included Note : To ensure proper assembly, please follow all steps provided in the installation manual (provided in pdf below)