The Blue Dot Heel Cup is the newest addition to our product line in the war against heel pain. It is a medial grade silicone cushion that has been designed with a "Blue Dot" in the medial side of the heel. This "Blue Dot" area is made of a softer silicone to help cushion the heel for greater comfort underfoot. The cupped design forces the fatty pad of the heel (the body's own natural defense against skeletal shock) downward for extra protection. We recommend this style for the vigorous athlete or for anyone whose normal routine requires distance walking. Compare the quality and price of these to any others available. You won't find a better heel cup for the price.