What's better than 1 pair of heel cups? 2 pairs! This heel cup kit includes 1 pair of our Tuli's Classic Heel Cups and our Tuli's Heavy Duty Heel Cups. Tuli's Classic Heel Cups are ideal for those suffering from heel pain and aching feet. Tuli's Classic Heel Cups work best in all shoes because they are supportive yet flexible enough for any shoe. You can have lightweight support and cushioning all day for any daily activity. They are ideal for treating plantar fasciitis, Achilles tendonitis, shin splints, and general heel pain. Tuli's Heavy Duty Heel Cups are twice as thick as our Classic Heel Cups and offer maximum performance and protection when you need it the most. Tuli's Heavy Duty Heel Cups offer all the comfort you expect from our Classic Heel Cups while delivering the heavy duty protection you need from heel pain during sports activities such as volleyball, soccer, basketball, and tennis. These sever's disease heel cups work best in athletic shoes, cleats, work boots, and more spacious lace up shoes. They are ideal for treating plantar fasciitis, Achilles tendonitis, sever's disease, shin splints, and general heel pain. Both heel cups are bio-mechanically designed and have multi-cell, multi-layer design that absorbs shock and returns impact energy just like the system naturally found in your feet. These heel cups provide immediate heel pain relief by cushioning the area of pain and elevating the heel bone. The additional cushion and elevation you get when you use these plantar fasciitis heel cups allow you to prevent and treat problems like sore heels and shin splints. We've scientifically duplicated the shock-absorbing design naturally found in your feet to maximize shock absorption and keep the back, feet, knees, and hips in alignment. For best results, allow time to become familiar with the feel of your heel cups. Best worn outside of socks. Refer to the Sizing Guide for the best fit. The heel cup does not adhere to your feet – Should be worn with shoes.