I wear a size 32 waist, so I took a size 32 belt. Only 1-2 inches of the belt goes through the buckle without stretching it. There is about an inch of strap left if I stretch it to fit snugly, but if I were to buy it again I would go up a size. However, it's a great belt, comfortable, stretchy, versatile, especially with summer wear, and very affordable. There is no point in overpaying 3-5 times for Tommy Bahama branded items or similar.