Made from fabric originally developed for NASA astronauts to combat extreme temperature fluctuations, this is the L-shaped pillow that prevents overheating across your entire body. Millions of invisible microcapsules inside the patented fabric absorb excess heat and pull it away from the body, maintaining a comfortable temperature throughout the night. The pillow's L-shape contours to a side-sleeper's legs, chest, arms, and head. The medium-firm, 56" long pillow has 70 oz. of hypoallergenic, soft fiberfill that supports and cushions the body and the 300 thread-count cotton cover has a soft, smooth feel. Pillowcase is removable and machine washable. 56" L x 20" W x 8" D. (7 lbs.)