The light Healthy Wave Mat Jade & Tourmaline Far Infrared Heat Mesh Mat is our most affordable medium far infrared heat mat available. It features 32 jade discs, 18 tourmaline discs and is 32 inches long by 20 inches wide. The discs are much flatter than the 1 inch stones, found in our other mats, which some find more comfortable if you prefer a smooth surface. This size of mat allows you to target a larger area of your body when lying down compared to the small mat. For example, when lying down on this mat, it can cover the entire area from your shoulders to lower back or alternatively you can stretch your legs out on it to target them instead. This mat works great on its own but is also an excellent extra mat to have due its versatility, portability and low cost.