Shoes made with leather outsoles are of higher quality and more expensive for several reasons. Not only is it a sustainable resource but leather is 100% free of plastics and is biodegradeable. When wearing footwear that is made with a leather sole, you are essentially creating a custom pair of shoes for yourself. Over time, your comfort level in them will increase as the leather moulds and contours to the shape of your foot. Leather soles can also be easily replaced at a shoe repair shop years after wear thus preserving the style for more years of stylish wear.