Thick Leather, really well 4.3cm wide (wider than the other men's belt). I've measured it specially, because the alleged 4cm wide belt often cheat by a few millimeters ....
Quality of the leather is high quality. The strap fits great for style. Bought the size 95 - 34 at waist jeans fits well.
Those looking for a "fat belt", is served here well. At a price of 15 a good buy.