🛏️ Tranquility Essentials by Serta – Forest Hills Medium 15" Experience the perfect balance of comfort and support with the Forest Hills Medium mattress from the Tranquility Essentials™ by Serta® collection. Built with Serta’s trusted hybrid design, this mattress combines layers of pressure-relieving foams and individually wrapped coils for a truly balanced feel — not too soft, not too firm. The Forest Hills Medium offers the responsiveness and cooling benefits of Serta’s signature coil system with the contouring comfort of gel-infused foams. It’s the ideal choice for sleepers who change positions during the night or share the bed with a partner. Key Features Medium Comfort Level – A versatile “just-right” feel that supports all sleep positions — great for couples or combination sleepers. Hybrid Construction – Layers of premium foams sit atop Serta’s 825 Edition Custom Support™ Individually Wrapped Coil System for adaptive, edge-to-edge support. Cooling Comfort – Features Cool Twist® Gel Memory Foam to help pull heat away from the body for a cooler, more comfortable sleep. Pressure Relief – Cushioning layers of PillowSoft® HD Foam and QuiltLoft™ Memory Foam reduce pressure on shoulders and hips. Edge Support – Foam encasement around the perimeter improves stability and expands usable sleeping surface. Motion Isolation – Individually wrapped coils reduce motion transfer for a quieter, more restful night’s sleep. Adjustable Base Compatible – Works with Serta® adjustable foundations for personalized comfort. CertiPUR-US® Certified Foams – All foams are tested and certified for safety, performance, and durability. 10-Year Limited Warranty – Backed by Serta’s trusted quality and craftsmanship.