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