Go to Etsy.com. It's great for leather products. I bought lots of belts from brand names growing up, and they all quickly fell apart. Then I learned about full grain leather. I talked with a local person I found on Etsy, provided the measurements to the center hole, chose a solid stainless steel buckle from their selection, gave them the measurements for the width of the belt, and they cut one from some black, full grain, vegetable tanned leather. I've had the belt for years, wear it all the time, and it's like new, but just keeps looking better and getting softer.

Once again, go to Etsy and search for full grain leather belts. I spent about $70 on mine. This is one of the markets where you'll get a much better product working with a local craftsman than shopping with a brand name.