Instantly upgrade your sleep with targeted comfort and reversible support with the Dream Serenity 4" EcoZone Cooling Reversible Memory Foam Mattress Topper. This topper features proprietary Biossentials memory foam which provides superior pressure relieving comfort while being better for the environment. The foam features a USDA BioPreferred certification using certified bio-based memory foam which is naturally cooler and more breathable with the same pressure-relieving qualities as traditional memory foam while also replacing traditional petroleum-based with sustainable soy-based chemistry. The topper also features reversible comfort options with 5-zoned massaging comfort on one side and targeted support on the other. This product is OEKO-TEX Standard 100 certified and the memory foam is also 100% CertiPUR-US Certified ensuring the product is made without harmful chemicals and is tested by independent labs to meet rigorous standards for content, emissions, durability, and performance. Ships compressed and rolled to conveniently arrive at your doorstep for easy setup. Made in the USA. Medium Solid Warranty available Domestic Product Specifications 79in x 59in x 4in Material & Care Memory Foam Memory Foam Spot clean only