Sleep soundly on this pressure-relieving, 4-inch mattress topper made with Biossentials plant-based memory foam. This topper helps you affordably transform your existing mattress with reversible comfort options. The wave convolution pattern features massaging comfort tips while opposite side features traditional slab - both sides offer superior pressure relieving comfort. This topper also features integrated antimicrobial product protection in the foam formulation which helps eliminate more than 99% of stain and odor causing bacteria. The proprietary Biossentials memory foam used in this product was designed by sleep experts to provide superior pressure relieving comfort with enhanced airflow and sustainability features. The foam features a USDA BioPreferred certification using certified bio-based materials 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 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. This product ships compressed and rolled to conveniently arrive at your doorstep for easy setup and is proudly made in the USA. Medium Solid Warranty available Domestic Product Specifications 78in x 58in x 4in Material & Care Memory Foam Memory Foam Spot clean only