Sleep Studio 2.5-inch ViscoFresh 4-Pound Breathable ViscO2 Memory Foam Mattress Enhancer with Coolmax Cover, Queen 4.0LB Breathable ViscO2 high performance meoory foam 3-zone ventilation for air circulation and support where it's needed most Activated Charcoal elininates odors and helps keep your bed fresh Coolmax cover is skirted to ensure a good fit and is machine washable/dryable The formula includes natural ingredients, Made in USA