From Foot Petals, the Ball of Foot Cushions with Extra Cushion feature: Ball of foot cushions keep feet from sliding forward, reducing burning pain and preventing calluses Slim design offers comfort while remaining discreet and eliminates ugly overhang and toe scrunch without compromising fit 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.