Click to View Kids Sizing Guide The ARCHLINE Kids Orthotics are high quality biomechanical orthotics. They are the World’s Most Easy-to-wear Orthotics. The kids orthotics are perfect for child foot development and allows your kids to work/play longer and happier. The fit well in most kids size school shoes and runners. Each pair features our signature orthotic sole footbed made with flexible lightweight materials and maps the entire soft tissue and muscle of your feet. The Archline signature orthotic footbed design accommodates and aligns the natural posture of the foot, relieving strain and over-extension of the plantar fascia muscle and providing optimal orthopedic comfort and support.