The strap width is listed in the product title — for example, "22MM" refers to the lug width where the strap attaches to the watch case. To verify your size, measure the gap between the lugs on your watch with a ruler or caliper. Breitling models like the Superocean, Chronomat, Avenger, and Endurance commonly use 20MM, 22MM, or 24MM straps. The listing will also note compatible models.