↓ size ↓   1 cm = 0.3937 inch     US size 5.5 = 13 cm / 5.11 inch insoles length   US size 6.5 = 13.5 cm / 5.31 inch insoles length   US size 7 = 14 cm / 5.51 inch insoles length   US size 7.5 = 14.5 cm / 5.71 inch insoles length   US size 8 = 15 cm / 5.91 inch insoles length   US size 8.5 = 15.5 cm / 6.1 inch insoles length   US size 9.5 = 16 cm / 6.29 inch insoles length   US size 10 = 16.5 cm / 6.49 inch insoles length   US size 10.5 = 17 cm / 6.69 inch insoles length   US size 11 = 17.5 cm / 6.88 inch insoles length   us size 11.5 = 18 cm / 7.08 insoles length     Note: Dear friends The comfortable length is the foot length add about 1cm. And Because 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.  Please choose the right size. Don't understand, please contact our customer service  We will give you reply in the first place Because it is manual measurement, so there may be a 0.2-0.5 cm error. I wish you a happy shopping                             Shipping You after the success of the payment,usually we send you the goods in two days We choose the high quality of shipping company, provide timely update of logistics tracking information, you can query the goods at any time. Delivery time according to different countries for 15 to 45 days commonly, some countries may only need two week fast delivery.     Color difference on the problem of color difference: there are some color more or less difference of each computer color, please know you need color choice to buy.  I wish you a happy shopping!     Return Policy   We do our best to serve our customers the best that we can.  We will refund you if you return the items within 15 days of your receipt of the items for any reason. However, the buyer should make sure that the items returned are in their original conditions. All return shipping costs are the responsible of the buyers.      Feedback   Your satisfaction and positive feedback is very important to us. Please leave positive feedback and 5 stars if you are satisfied with our items and services.  If you have any problems with our items or services, please feel free to contact us, and we will do our best to solve any problems and provide you with the best customer services.