Kanjo Acupressure Foot Pain Relief Ball Set-Acupressure Foot Massager Kanjo 2-1/2 Inch Diameter / 2-3/4 Inch DiameterNo matter what shoes you're wearing, the truth is your feet take a lot of beating throughout the day: Treat them to these spiky PVC balls for acupressure therapy relief The green mild ball is 2. 5 inches in diameter; the yellow intense ball is 2. 75 inches in diameter: Use them to soothe your swollen feet and help with lymphatic drainage Keeping the blood circulation healthy in your feet has never felt so relieving; use Kanjo's foot pain relief balls