From Foot petals, the Back of Heel Cushions with Extra Cushion feature: One pair of back-of-heel cushions Back of heel cushions keep heels from slipping in and out of shoes, reducing blisters and ankle chaff Slim design offers comfort while remaining discreet, giving shoes the perfect fit by helping with sizing and fit issues Can be used at the top or back of shoes PORON® Cushioning provides superior shock absorption while being lightweight and breathable, keeping your feet cool, dry, and comfortable Adhesive backing for lasting placement, not recommended to remove and reuse Made in the USA.