ChillGel The Original Cool Slumber Mattress Pad, Large Sleep comfortably cool with The Original Cool Slumber Mattress Pad; temperature regulating Chill Gel draws heat away from your body while you sleep Simply place The Original Cool Slumber Mattress Pad on top of mattress, cover with a bed sheet and lay down on top for cool relaxing sleep Easy to use; does not require water, plug-in devices, or refrigeration Multi-use portable pad can be placed on any body part for cooling relief; use on a chair, couch cushion and other places for cooling relief Slumber mattress pad size: 35-Inch by 46-Inch