See the size guide here

Walking with confidence will never be a problem with some Bobux on your feet! They belong to the brand's I-Walk line, a line designed exclusively for this stage of development, giving the child all the stability and shape necessary for the correct development of the foot. As is already characteristic of the brand, this is a resistant, flexible, breathable model and, of course, full of style!

Exterior: Suede with a velvety touch and leather with a wax finish on the ankle area.
Inside: Skin
Sole: Rubber, highly flexible, made with a resistant compound with thermoplastic rubber, designed to resist wear. It has 4 anatomically placed grooves that provide flexibility for growing feet.
Close: Velcro, accompanied by elastic laces for a perfect fit on any foot.
Important: Bobux is a brand officially recognized by the US Pediatric Medical Association as a brand that contributes to improving children's health. All shoes are made to the strictest safety regulations.

Reference: 632603