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? Is Chiroflow hypoallergenic? Can the pillow be washed? Is the Chiroflow® Waterbase® pillow guaranteed against manufacturing defects? How much water should be used?