This versatile first walker is the only shoe he'll need. Supple leather upper. Breathable leather lining and insole. Single hook-and-loop strap and heel pull tab make it easy to get on and off. Recycled rubber outsole and natural stitching. Natural Motion System® mimics barefoot walking, and has the flexible stride path and natural propulsion that babies need to grow into strong walkers. Lightweight outsole has deep flex grooves for maximum flexibility and toe wrap for protection. Weight: 3 oz Product measurements were taken using size 2.5 Infant. Please note that measurements may vary by size.