Size Details: 11.5 m Little kid : the inner size is 7.10 "/18cm/tag 28 12.5 m Little kid : the inner size is 7.30 "/18.6cm/tag 29 13 m Little kid : the inner size is 7.60 "/19.2cm/tag 30 1 m Little kid : the inner size is 7.80 "/19.7cm/tag 31 1.5 m Little kid ? the inner size is 8.0 "/20.2cm/tag 32 2 m Little kid : the inner size is 8.20 "/20.9cm/tag 33 3 m Little kid : the inner size is 8.50 "/21.5cm/tag 34 4 m Big kid : the inner size is 8.70 "/22.1cm/tag 35 Lightweight, breathable, mesh design, dual mesh, breathable, not stuffy feet, more lightweight and comfortable. Convenient Velcro, one piece strap design, baby can wear and take off freely. Comfortable inner lining, curved design of shoe mouth, comfortable and breathable inner lining, insole sewing technology, firm. Lightweight non slip sole, EVA cushioning outsole, lightweight and enhance resilience, so that you can exercise without worry and wear light. Sufficient resilience, strong cushioning for feet and feet, large-area hollow three-dimensional design and anti sliding performance.