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®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. Cooltemp™ cover powered by reprieve™ - this cool-to-the-touch, breathable cover is made from recycled plastic bottles. Terrafusion™ memory foam - made from 30% plant-based materials that provides pressure relief and reduced motion transfer for uninterrupted sleep Evercool® supreme memory foam - this high-density memory foam provides a weightless, cradling feeling all over your body for extraordinary pressure-point relief and support Evercool® fuze gel memory foam a dynamic combination of cooling gel and premium memory foam that cradles and cools you in a pressure relieving embrace. Serta foam core - durable edge-to-edge support for any sleep position to help you rest comfortably all night long Proudly 100% USA assembled Compatible with most frames, platforms and adjustable bases We only use foam that is Certipur-us certified Mattress Top Type: Tight Top Mattress Type: Gel Memory Foam, Memory Foam Included: 1 Mattress(es), 1 Box Spring(s) Features: Breathable, Cooling, Antimicrobial, Cushioning Layer, Foam Layer, Temperature Regulating, Cooling Layer, Adjustable Base Compatible Additional Information: Relieves Pressure Points, Eliminates Motion Transfer, Suitable for Adjustable Bed Frames, Conforms To Body Manufacturer Warranty: 10 Year Bed Size: Twin Xl Maximum Weight Limit: 1000 Lbs Base Material: 100% Foam Comfort Type: Plush Care: Spot Clean Certifications And Listings: Certipur-Us Certified 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. Set includes mattress plus box spring/foundation. King and Cal. King mattress sets feature 2-piece side-by-side foundations for easier navigation in tight spaces.