Our red leather dog collar is 1-1/4 inches wide and has dome studs. This leather dog collar tapers to 1 inch at the buckle for easier buckling. Stress points are double-riveted and stitched. This dog collar is available in sizes 19" 21" 23" 25" 27" All dog collars are not sized the same. Our collars are measured from tip to tip. Please use a cloth tape measure to measure your dogs neck. To get the correct collar size add 4 inches to your dogs exact neck measurement. For example a 17 inch neck will need a size 21 dog collar. A 19 inch neck will need a size 23 dog collar.