TULI's Heel Cups - Heavy Duty Green, Shock Absorbing Heel Cups for Heel Pain Relief, Heel Spurs, and Foot SupportupsReduce Heel Strike Shock and Vibration with TULI's Heavy Duty Heel Cups Designed for heavy duty applications, TULI's Heel Cups Heavy Duty Green provide superior shock attenuation for individuals over 85kg or those involved in high impact sports. These heel cups are indicated for pain in the heels, heel spurs, tired feet, arthritic joints, knee, and back pain.