Upgrade your existing mattress with the deluxe fitted cover that restores energy and improves circulation. The Circulation Enhancing Mattress Cover is made of advanced, ceramic coated threads. Soft to the touch, these natural fibers trap body heat and return it in the form of Far Infrared Rays (FIR). These rays penetrate deep into the body’s tissue, where they stimulate the microcirculatory system, increasing local blood circulation. Available in Twin, Full, Queen or King.