Athletic orthotic insoles for low arches and flat feet; ideal for walking, running, and cross training Reinforced nylon arch support plate enhances motion control and promotes alignment SKYDEX air bubbles in the heel and arch of the insert absorb shock during high impact activities COOLMAX fabric top cover wicks away moisture to keep feet cool and dry Available in two sizes to fit women's athletic shoes: Women's 5-7.5, Women's 8-11