Features Firmness: Medium Profile Height: 12.5” 800 Series Pocketed Coil® Technology Dualcool™ Technology Gel Memory Foam Lumbar Support Geltouch® Foam Warranty: 10 Years Limited Works on Adjustable Base RPT-46-SET 4/6 SET RPT-46 4/6 MATTRESS 46-SF 4/6 SEMI-FLEX FOUNDATION RPT-50-SET 5/0 SET RPT-50 5/0 MATTRESS 50-SF 5/0 SEMI-FLEX FOUNDATION RPT-66-SET 6/6 SET RPT-66 6/6 MATTRESS 33X-SF 6/6 SEMI-FLEX FOUNDATION