Size of collars: 17 inch 32 inch 37 inch 15 inch 19 inch 23 inch 34 inch 40 inch 20-32 inch 25 inch 36 inch Small 22 inch 27 inch 38 inch 16 inch 20 inch 24 inch 29 inch large 16-24 inch 21 inch 26 inch 31 inch 14 inch 18 inch 28 inch 33 inch 39 inch 30 inch 35 inch medium
Use: Search & Rescue Obedience training Training All weather For working dogs Police/Military K9 training Walking and daily use
