Is your current mattress not giving you the right comfort? Well, the Simmons Beautyrest Classic Karrdale 12 in. Plush Mattress is about to change your life! This incredible mattress features super pocketed coil springs that conform to your body for customized comfort. The QuantumLock technology increases the durability of the mattress' sleeping surface. For even more comfort, the mattress features memory foam, which enhances support and custom comfort. The mattress' Transflexion Comfort Technology guarantees consistent comfort throughtout the bed's life.About Simmons:One of the world's leading names in the bedding industry, Simmons is known for introducing innovative bedding designs. From their Beautyrest Pocketed Coil technology to their new Recharge Sleep System, Simmons products are designed to help you get a better night's sleep and encourage a smart sleep routine.Sound Sleep GuaranteeOur Sound Sleep Guarantee lets you try out your new mattress and make sure you found the perfect one. Give your new mattress a try for 21 days that's about how long a new mattress takes to conform to your body and for you to get used to it. If after the first 21 days and up to the first 100 days after delivery you decide the mattress isn't for you, call us at 866-530-4157 and we'll come pick up the old one and exchange it for a different mattress for you. Here are the details:The Sound Sleep Guarantee applies only to the following brands: Laura Ashley, iMattress, King Koil, Sealy, Serta, Simmons, and Stearns & Foster. All other mattress brands cannot be returned.Pick-up and exchange is one time only per customer.A processing-and-pick-up fee of $99 is required.If you choose a new mattress with a higher price than the one we're picking up, you'll need to pay the difference.We are unable to accept returns or cancellations; only exchanges.Valid only within the 48 contiguous United States.