ERGONOMIC DESIGN: Anti-slip sole effectively avoid wear-resisting for walking, bouncing, and running. BREATHING SHOES: Ultra lightweight make the child can’t feel the weight. only 0.25lb-0.4lb Fly knit woven fabric upper allows air to flow through easily to keep feet from sweating. SUITABLE FOR CROWD: Children, Kids, Toddler, Little Girls, Boys, Big boys, Students. Any occasion. OCCASION: Perfect for School casual, walking, running, sports, outdoor, Fitness & Cross-Training,Trail Running,Skateboarding,travel,exercise and other indoor and outdoor sports activities and so on. AFTER-SALES: We promise 90 days free replacement. any size, quality problems we deal with within 24 hours.