Meet the premium memory foam mattress that’s turning good nights into better mornings. Lull's three-layer mattress gives you the perfect combination of comfort and therapeutic support. Whether you sleep on your back, front, or side, each layer of foam works together to give you an enjoyable night of sleep.   The lull mattress supports and cradles your body to provide healthy spinal alignment. Lull's viscoelastic memory foam top layer features a gel polymer injection, transferring heat away from your body by dispersing it throughout the mattress. This mattress's breathable fibers and open cell foam structure promote improved airflow to keep you cool all night. Mattress Top Type: Tight Top Mattress Type: Mattress In A Box Included: 1 Mattress(es) Features: Breathable, Cooling, Cooling Layer, Cushioning Layer, Foam Layer, Temperature Regulating, Mattress In A Box Additional Information: Suitable for Adjustable Bed Frames, Eliminates Motion Transfer, Conforms To Body, Relieves Pressure Points Manufacturer Warranty: 10 Year Bed Size: Twin Measurements: 38 Width/Inches, 75 Length/Inches, 10 Height/Inches Base Material: 100% Cotton Comfort Type: Cushion Firm Care: Spot Clean Certifications And Listings: Certipur-Us Certified Mattress Height: 10" 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. Mattress arrives compressed in a box and then regains its size and shape after opening.