Featuring select materials that are up to 70% sustainable, the icomforteco supportive mattress offers a hybrid construction with a classic, quilted-top feel-with upgrades available for even more cooling, comfort, and pressure relief. Plush pillowtop feel - great for side sleepers for extra comfort and cushioning at the shoulders, hips and lower back. 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: Gel Memory Foam, Memory Foam Included: 1 Mattress(es), 1 Box Spring(s) Features: Breathable, Cooling, Antimicrobial, Cushioning Layer, Temperature Regulating, Cooling Layer, 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 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. Serta iComfortECO Q35LTX Plush Pillow-Top Quilted Hybrid - Mattress + Box Spring