Foot Petals Amazing Arches Cushions-Black Iris-1 pair by Foot Petals. $6.98. Amazing Archesarch support cushionscreate a virtual arch for flat feetAmazing Arches support your arches and give your shoes the "perfect fit." They work with the body's natural shock absorption system to reduce "foot fatigue." Help prevent calluses from forming, protect bones and tissue, reduce back pain. Virtually invisible - works with sexy flats, and high heels.One size fits fabulously!