We aims to provide excellent quality products and customer service.US 11 = Eur size 27 = inner length 16.5 cmUS 11.5 = Eur size 28 = inner length 17.3 cmUS 12.5 = Eur size 29 = inner length 18 cmUS 13 = Eur size 30 = inner length 18.5 cmUS 1 = Eur size 31 = inner length 19.0 cmBecause of the long time delivery time by China Post Air Mail and child will grow up fast please choose more bigger size shoes for your child.You should according to the internal length and choose Chinese，Eur or US right size.For the crowd: girlsFor the season: summer Color: orange， peach， blueWelcome to our shop and enjoy your shopping moment!Looking forward to come again!