This product is made of genuine leather. The fit of these shoes is standard. You can buy your own size. The Exterior Is Genuine Leather. Inner Genuine Leather. The interior made of genuine leather prevents odor and allows you to breathe. Derby laceup design. Sole: Poly Insole Height: 3.5 cm Durable and light poly sole. All Ducavelli products are guaranteed for 6 months. All products of Ducavelli, an English brand, are produced in Turkey. Genuine leather insole. Longlasting use thanks to the stitched sole. Ducavelli Stern Genuine Leather Men's Casual Classic Shoes, Genuine Leather Classic Shoes, Derby Classic Shoes.