Tough1 Crib Be Gone Premium Leather Collar Instantly stops cribbing! Shaped to fit comfortably around the jaw with straps over crown and across forehead to keep the collar securely in place, this collar applies pressure only when your horse tries to crib. It can be worn all day and does not affect grazing, drinking or eating. Features: Stops cribbing Comfortable fit Can be worn all day Does not affect grazing, drinking or eating Item Specifications: Sizing (measurements are approximate): Mini/Pony: Poll strap: 18" - 26"; Brow strap: 23" - 31" Horse: Poll strap: 26" - 34.5"; Brow strap: 29" - 38.5" Draft/Large Horse: Poll strap: 35.5" - 42"; Brow strap: 38.5"- 46.5"