Size of collars: 21 inch 32 inch 31 inch 20 inch 30 inch 19 inch 29 inch 18 inch 40 inch 28 inch 39 inch 17 inch 27 inch 38 inch 37 inch 26 inch 16 inch 25 inch 36 inch 15 inch 35 inch 14 inch 24 inch 23 inch 34 inch 33 inch 22 inch
Use: Police/Military K9 training Obedience training For working dogs Walking and daily use Vet visit Training Agitation/Attack training
