Active kids need foot support and cushioning that’s designed for growing feet. After the age of five, when the bones, muscles and ligaments of the foot begin to fully develop, Spenco Kids® PolySorb® Insoles, along with quality shoes and pediatric care, are an important part of a kid’s foot health future. Spenco Kids® PolySorb® Insoles are unconditionally guaranteed for one year. Cushioning, shock absorption and reduced friction to help prevent blisters.