ID Sizes (with braiding): X-Small: 6.5 in. (kids with small wrists**) Small: 7.0 in. (gals with small wrists or kids with bigger wrists**) Medium: 7.25 in. (most popular) (Gals with average wrists, or guys with small wrists**) Large: 8.00 in. (guys with average wrists or gals with larger wrists.**) Measured from middle of the buckle to the other middle of the buckle. ** Generally speaking. If in doubt; order the next size up. Remember, this is a handcrafted real leather product so there may be slight variation in sizing. Also, leather tends to stretch slightly once broken in.