Serta Luxe Edition Grandmere Plush Pillow Top The Grandmere Luxe Edition features advanced bedding technology exclusive to Serta. Layers of memory foam compliment the 825 Edition Support® Coil System, maximizing both comfort and support. A combination of cutting-edge memory foams including PillowSoft® HD Foam, Cool Twist® Gel Foam, Cool Twist® Gel Memory Foam, BestEdge® Foam Encasement, and HyperTouch™ Comfort create a unique sleeping experience sure to improve your sleep quality. Features FreshFeel Fiber FreshFeel Fiber is an FR fiber with moisture-wicking and anti-microbial properties. HyperTouch™ Comfort HyperTouch™ Comfort system comfortably cradles your body from head to toe for better pressure point relief. PillowSoft® HD PillowSoft® HD Foam provides plush contouring comfort and support at the surface of the mattress. Cool Twist® Gel Memory Foam Cool Twist® Gel Memory Foam is designed to gently conform to the body and works with the entire mattress system to help provide pressure-relieving comfort and an additional layer of cooling gel foam promotes airflow and heat dissipation. Cool Twist® Gel Foam features cooling gel which is swirled directly into a breathable foam designed to promote airflow and heat dissipation. 825 Edition Custom Support® Coil System 825 Edition Custom Support® Coil System with Serta’s advanced BestEdge® Foam Encasement system is designed with an extra-deep foam rail to help reduce edge roll-off and extend the sleep surface. Mattress Top Type: Pillow Top Mattress Type: Innerspring Included: 1 Mattress(es) Features: Breathable, Cooling, Cushioning Layer, Foam Layer, Cooling Layer, Wrapped Coils, Adjustable Base Compatible Additional Information: Relieves Pressure Points, Eliminates Motion Transfer, Conforms To Body, Suitable for Adjustable Bed Frames Coil Count: 513 Coils Manufacturer Warranty: 10 Year Bed Size: Twin Xl Measurements: 38 Width/Inches, 14 Depth/Inches, 79.5 Length/Inches Base Material: 60% Metal, 40% Polyethylene Comfort Type: Plush Care: Spot Clean Certifications And Listings: Cpsc - 16 Cfr 1633 Compliant, Cpsc - 16 Cfr 1632 Compliant Country of Origin: Made in US Visit our Furniture & Mattress Customer Care Center for delivery options, protection plans and other services. Problem with an order or need help with a return? Our Furniture & Mattress Customer Service agents will be happy to help. Give us a call at 1-800-442-7902 Don’t forget to print off your delivery checklist to avoid any delays or issues when delivering your item. Includes mattress only. Mattress plus box spring option also available.  This mattress meets the requirements of 16CFR Part 1632 (federal flammability (open flame) standard for mattresses and mattress pads This mattress meets the requirements of 16CFR Part 1633 (federal flammability (open flame) standard for mattress sets) when used with foundation