Boys' New Balance Big Kid 520 Running Shoes The Kids' New Balance 520 delivers lightweight comfort and sporty performance for school days, playtime, and everyday adventures. A breathable mesh upper helps keep feet comfortable, while supportive synthetic overlays add structure where kids need it most. FRESH FOAM midsole cushioning creates a soft, comfortable feel underfoot without weighing them down. The traditional lace-up design and durable rubber outsole provide a secure fit and reliable traction for active days.