SOFT GEL PACK FEATURES A CLOTH COVER. MICROWAVE AND FREEZER SAFE. STORE IN REFRIGERATOR OR FREEZER FOR COOL USE. MICROWAVE FOR USE AS HOT PACK. HAND WASHABLE. INSTRUCTIONS PRINTED ON ITEM. COMPLIES WITH CPSIA, FDA. 7 1/4" W X 4 1/2" H X 1/2" D