These Primipassi Shoes are available in three sizes and numerous different models, to find the right combination with everyday outfits. However, they all have something in common: they are comfortable to put on and take off and have a soft bottom to cushion the impacts of your child's little foot! * Available in 22 different models in style, color and materials * Each model is available in three sizes: we recommend that you rely on the following size chart when choosing the number to order *SIZE CHART* SIZE INTERNAL LENGTH INTERNAL WIDTH 0-6 months 11 cm/4.33 in 5.6 cm/2.20 in 7-12 months 12 cm/4.72 in 5.8 cm/2.28 in 13-18 months 13 cm/5.12 in 6.0 cm/2.36 in To calculate the 'Inner Length' to be ordered, add 1 cm to the length (from the toes to the heel) of the child's little foot!