From S&B:

Show off your favorite things in life with our iconic needlepoint belts! As elegant as they are casual, our belts are the perfect accessory to help you stand out from the crowd. Our 100% hand-stitched belt measures 1.25" in width and is lined with full grain, Italian leather and is finished with a solid brass buckle.

Each belt is:
-100% hand-stitched needlepoint
-Stitched with French cotton thread
-Lined with full grain Italian leather
-Finished with a solid brass buckle
-1.25” in width

The easiest way to determine a S&B belt size is to add 2-3 inches to a men's pant size. If the recipient wears multiple pant sizes, use the largest size to calculate the correct belt size. This formula works best with chino style pants. If in between sizes, round up to the next size. Using denim sizing is not recommended.

Some individuals may need to go up an additional belt size.