Dr. Rosenberg's Instant Arches® are made of a unique and durable closed-cell foam material which creates maximum support, comfort and cushion for your tired feet when wearing any type of shoes; whether it be heels, flats, boots, sandals, athletic or open toe styles. It helps reduce foot pain resulting from plantar fasciitis, pain in the ball of the foot, heel spurs, abnormal pronation, bunion pain and foot pain when standing for long periods of time. With its unique shape, one size fits all shoe styles and heel heights. These arches will even fit in your favorite summer flip flops and sandals. Plus, the arches are designed to work for everyone from teenagers through adults. A specially formulated adhesive allows adjustments in all shoes and prevents movement during normal wear. For those with very high arches try placing one Instant Arch on top of another to give you the extra support you need.