Medical grade adhesive</br>Non-irritant</br>Flexible</br></br>Product Description</br></br>Helps prevent blisters. a highly breathable durable non-woven fabric stretches and conforms to protect against rubbing and friction. stays in place while sweating or bathing with a medical grade adhesive.</br><br/>http://www.amazon.com/gp/product/B004WIUNM6