A champion of comfort for all, Serta, inc. (“Serta”) has pioneered sleep innovation for more than 90 years, bringing quality products to more than 150 countries worldwide. Every bed across the Serta’s® portfolio is designed to provide superior comfort, including the award-winning iComfort® collection. iComfortECO™ features select materials that are up to 70% sustainable*, this supportive foam mattress was designed for sleep that’s cool, comfortable, and restorative—with upgrades available for even more cooling, comfort, and pressure relief.*Sustainable refers to plant-based foams & recycled fibers and varies by model. See serta.com for details. Firm feel - ideal for stomach and back sleepers with extra support for heavier sleepers. Cooltemp cover powered by repreve. This cool-to-the-touch, breathable cover is made with recycled plastic bottles. Terra fusion memory foam. Foam made from 30% plant-based material that provides pressure relief and reduced motion transfer for uninterrupted sleep. 1000 series 5-zone quad coil support system - made with 85% recycled steel, provides targeted pressure relief and support for your back and thighs—and cradles you everywhere else. Recycled fiber base - compressed recycled fiber provides a supportive base under the mattress core. 100% usa assembled, certipur-us certified, powered by repreve Designed and built in usa Mattress Top Type: Tight Top Mattress Type: Hybrid Included: 1 Mattress(es) Features: Breathable, Temperature Regulating, Cooling Layer, Cushioning Layer, Antimicrobial, Foam Layer, Adjustable Base Compatible Additional Information: Relieves Pressure Points, Suitable for Adjustable Bed Frames, Conforms To Body, Eliminates Motion Transfer Manufacturer Warranty: 10 Year Bed Size: Twin Xl Measurements: 40 Width\Inches, 14 Height\Inches, 79.5 Length\Inches Maximum Weight Limit: 1000 Lbs Base Material: 75% Foam, 25% Metal Comfort Type: Plush Care: Spot Clean Certifications And Listings: Certipur-Us Certified Mattress Height: 14\" 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. Serta iComfortECO S40HD Plush Hybrid - Mattress Only