What is the size of the Chiroflow Professional Waterbase pillow? August 06, 2019 14:40 Updated The Chiroflow® pillow is a “Jumbo” size – it is 20″ x 28″ and will fit a standard or queen pillow case. Related articles What type of polyester filling is used in the Chiroflow pillow? My pillow is leaking, what do I do now? Which side of the pillow do I sleep on? How long can the water stay in my pillow before it needs to be changed? Is my pillow hypoallergenic?