Casper Original Hybrid Mattress. King

-Top Layer: 1.5 of Polyurethane Foam - A layer of AirScape�?perforated breathable foam increases airflow and circulates air so you don't get hot at night -Middle Layer: 2 of three-zone memory foam - Memory foam with 3 areas of Zoned Support™itis help align your spine and relieve pressure. This makes the mattress softer under your shoulders and firmer around the hips. waist. and lower back. -Bottom Layer: 7 of Polyurethane foam encasement tub with coil unit - Resilient springs add a little lift. support. and airflow to the mattress of your dreams. A firmer border provides edge support to help you get in and out of bed easily. -Fabric Content: Recycled Polyester / Polyester / Upcycled Cotton / Rayon / Lycra There are up to 57 recycled bottles in each cover -Hybrid Mattress. sizes Twin-California King -Certified by our Sleep Lab -100-night trial -10-year limited warranty