*Purchase any Serta iComfort® or iSeries® mattress set between February 4, 2015 and March 2, 2015 and receive your choice of either a free standard box spring (same size as the mattress purchased) or up to $1,000 off a qualified Serta adjustable foundation. Savings offers on the adjustable foundations will vary by model and size and are available only with the Motion Custom™, Motion Perfect® II and Motion Signature™ adjustable foundation models. Maximum $1,000 savings applies only to king size adjustable mattress sets with Motion Custom base that includes two Twin XL adjustable foundation pieces. Offer available only at participating retailers in the United States and the District of Columbia. This offer may not be applied to previous purchases and cannot be combined with any other offer. Void where prohibited by law. Visit www.serta.com to find participating retailers. See store for details. ©2015 Serta, Inc.