Shop for Mattresses from Hayneedle.com! Get the support you need with the Spring Air Back Supporter Firm Mattress and Box Spring Set. This exceptionally comfortable mattress and box spring set offers firm support and excellent comfort that's bound to last. Filled with urethane foam, this mattress is perfect for all kinds of sleepers, no matter how fickle! Just plop down and relax. Available in a variety of sizes, this mattress and box spring set is perfect for any home.About Spring AirEstablished in 1926 and trusted by millions ever since, Spring Air has brought the best deigns that offer the comfort and support needed for a restful night's sleep. They look to provide the best in new designs, high quality products, and materials at an affordable price. Spring Air's revolutionary products stand alone when it comes to quality and comfort.This product has a 1-year warranty covering material or workmanship defects. For questions, call 1-800-267-1739.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 states.