These premium babies' leather booties are made from a soft, supple leather to provide a glove-like fit. Made from the softest eco leather to give optimum protection and comfort. The flexible anti-slip suede sole is perfect for running around indoors. Sizing Guide: Newborn = 0-3 months, Small = 3-9 months, Medium = 9-15 months, Large = 15-21 months, Extra Large = 21-27 months.