The Serta Perfect Sleeper Kepwick Grove Plush (Shown) or Firm Mattress is Serta's least expensive Individual Pocketed Coil Mattress and features Foam Encased Edges and a 1/2" layer of Serta's Cool-Twist Gel Memory Foam to ensures great conformity and breath ability. Also, new for 2015 is Serta's Patented Carbon-Steel Pocketed Coil Units to help prevent body impressions and motion transfer. Serta's Gel Memory Foam adjusts to each sleeper's unique body type, is heat resistant, and prevents motion transfer. We recommend the Plush model for Back and Side Sleepers or the Firm model for Back or Stomach Sleepers. On sale now at Bradley's Sleep!