The vegan leather moccasins are made out of faux leather and have suede leather soles (better grip). Sizes 3-6 and 6-12 have soft suede soles and sizes 12-18+ have rubber soles along with the suede.  Measurements are as follows; For the soft sole baby shoes3-6m---4.5 inches 6-12m--4.9 inchesFor the hard rubber sole12-18m--5.3 inches 18-24m--5.7 inches2-3T - 6.3 inches