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