For its lighter build, this is a surprisingly rugged collar. It should handle just about anything extremely well, though long and frequent swims are not recommended.
Playing in the Sun (Fits 19"-21" neck)
Tooled saddle tan natural veg. tanned leather buckle collar with white hand stitching along border, Texas star concho, and stainless steel spot accents; Moons and stars tooling pattern; Tooled keeper; 7/8" width; Stainless steel roller buckle and O-ring; Fits 19" - 21" neck
I hand sew with a traditional harness stitch method using needles, thread, and a diamond awl.
For sizing, place a flexible tape measure around your dog's neck in the place you would like the collar to rest, and pull it to the appropriate snugness, taking note of the measurement. Be careful to avoid fingers under the measuring tape.
If you have a collar that fits well, you may buckle it on the hole your dog is currently using and take a measurement of the INNER circumference, NOT around the outer perimeter of the collar.