The Blue Dot Heel Cup is designed to reduce heel pain associated with heel spurs and plantar fasciitis. It is a 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. Cupped design forces the fatty pad of the heel (the body's natural defense against skeletal shock) downward for extra protection. Recommended for the vigorous athlete or for anyone whose normal routine requires distance walking. Directions - Insert flat side down. Hand wash, air dry Caution: Not recommended for those with diabetes or those with poor circulation.