Below size chart will help us choose right size    According our customer who feedback the problem this boots run small could not fit ,Please measure the length of your kid's feet firstly, then find out the most nearly in size chart and find out the corresponding US size to make order.Our brand kids snow boots size chart is Toddler 8 , 9 , 10 for kids between 1-4 years,little kids 11 , 12 , 13 , 1 , 2 , 3 is for kids between 4-8 years,big kids 4 , 5 ,is for kids between 8-12 years. Toddler 8 M (0-4 years)=Heel to toe(IN) 6.59 Toddler 9 M (0-4 years)=Heel to toe(IN) 6.93 Toddler 10 M (0-4 years)=Heel to toe(IN) 7.27 Little kid 11 M (4-8 years)=Heel to toe(IN) 7.62 Little kid 12 M (4-8 years)=Heel to toe(IN) 7.97 Little kid 13 M (4-8 years)=Heel to toe(IN) 8.31 Little kid 1 M (4-8 years)=Heel to toe(IN) 8.62 Little kid 2 M (4-8 years)=Heel to toe(IN) 8.94 Little kid 3 M (4-8 years)=Heel to toe(IN) 9.28 Big kid 4 M(8-12 years)=Heel to toe(IN) 9.61 Big kid 4 M(8-12 years)=Heel to toe(IN) 10.04