This classic first walker will help him develop steady steps. Breathable leather upper. The textile lining wicks moisture. Self-molding textile footbed has a contoured heel cradle to ensure a secure fit. Removable footbed with Check Fit system allows you to check that they still fit. Double hook-and-loop closure for easy on/off. Sensory Response Technology™ helps mimic barefoot walking by having sensory pods on the outsole to help kids feel the ground. Flexible and lightweight outsole helps kids learn to adapt to uneven surfaces. Weight : 3 oz Product measurements were taken using size 3 Infant. Please note that measurements may vary by size.