Serta Motion Perfect III Adjustable Bed Base - Queen Fits inside any normal queen sized frame Includes head and foot articulation with preset positions for easy relaxation Whisper Quiet Six level Massage System: Included on both head and foot section, features a synchronize button that activates the head and foot massage simultaneously Exclusive Mega Fit Retainer: Velcro mattress retainer system keeps the mattress from sliding when adjusted. No Bar needed! 20 Year Warranty