Medial arch insoles to stabilize the calcaneal position. Medial arch support to rest the supportive soft tissue of the foot. Supports action of plantar fascia and resists high pronation forces. The best way to clean the insoles is to gently sponge them with warm soapy water and dry with a paper towel. Do not soak or dry in sun light. Pediatric size is for 2 years to 15 years comes in 4 size Categories.