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