(Best Friends) The Deluxe Grazing Muzzle is recommended by equine health professionals to prevent and help treat laminitis, founder and obesity. The small opening in the bottom allows horses a limited amount of grass, yet unlimited water. Rather than being restricted to a non-grass environment to control intake, horses are free to exercise and socialize as part of the herd. The lightweight muzzles resist rubbing and chafing and will not rot. Uses a plastic side-release buckle in the headstall as a breakaway feature. A spare buckle is included and is easily attached. Sizing runs about 2" larger in circumference and depth than the standard Grazing Muzzle.