our dual density Gel Heel cup provide superior cushioning in the heel area to reduce all kinds of heel pain. The dual density soft Gel is designed to combine superior cushioning and energy return for sneaker or casual shoe. A slip-resist design keeps the heel cushion in place, and with a one-year quality guarantee, our Gel Heel cup will provide activated energy from start to finish. One Size Fits All. Other Important Features: ? Material Content: soft gel,dual density ? Care Condition: Hand wash in water and air dry completely . ? Use in sneakers, casual shoes. ? Made in China