Jace Tight Top SoftPrecisionFit Coils flex to your bodys individual needs, help maintain natural alignment, and reduce nagging Bed Aches. The MoistureProtect Cover wicks moisture away from your body to help keep you cool, dry, and comfortable all night long The Coil Edge helps reinforce the mattress edges, giving you a solid seating and sleep surface. Rest assured night after night with a 10 year warranty.