Fall asleep and stay asleep with the Climate Cool Cotton Pillow featuring Phase Change Material (PCM) Technology printed onto 100% Cotton. PCM allows you to sleep at a perfect temperature by cooling you off if you get too warm. Studies show that you get a better nights'' sleep if your head stays cooler than the rest of your body which is why this pillow will keep you from tossing and turning and have you waking up feeling refreshed. Featuring a 2" gusset for added comfort and filled with exclusive hypo-allergenic Optiloft polyester fiber that is engineered to perform like down and give you maximum comfort. Product Features:Cool to the touch PCM Printed 233 Thread Count Cotton Cover 2 inch added Gusset for Support Great for Side Sleepers Hypo-Allergenic Resilient and Soft Polyester Fiber Fill Optimal Cooling Properties Ice Blue Satin Piping Machine Washable Dimensions: Standard: 18 inches x 24 inches x 2 inchesJumbo: 18 inches x 26 inches x 2 inchesQueen: 18 inches x 28 inches x 2 inchesKing: 18 inches x 34 inches x 2 inches