Extra Positioning Vest available in 3 sizes for the Chamberlain and the Churchill positioning systems.
Small: Chest circumference between 25 and 32 inches and belly circumference less than 32 inches.
Medium: Chest circumference between 30 and 37 inches and belly circumference less than 37 inches.
Large: Chest circumference between 35 and 44 inches and belly circumference less than 44 inches.