This is the first time I’ve heard of a shoe that accommodates to the growth of children. Rather than buying 3-4 different pairs of shoes for your kids, you should consider purchasing one pair of Inchworm adjustable shoes. The shoes adjusts from one size to the next size. So a size 1 could stretch to 1.5 and 2.
Some of the colors that the Inchworm comes in includes Blue, Cyclamen, Brown, Black, Earth/Silver, Pink, Grey/Black, Black, Grey/Blue, Green, White, Black/Grey, Red, Navy/Bone, Gray/Blue, Magenta, and Silver. Most of the shoes cost about $40.