The overeating of rich forage can cause horse health problems like founder, obesity, and more. This Tough1 Original Easy Breathe Muzzle can help slow down your speedy eater by limiting forage consumption through a small bottom opening. Made of strong nylon webbing and durable rubber, this halter features a 5-way adjustable fit system and throat snap. The crown piece features an adjustable, double-locking "quick grip" safety closure, making it easier or harder to break free, depending on the amount of "quick grip" used. This muzzle’s unique large nose holes at the front keep your horse breathing easy. Complete with dee ring for leading to and from turnout. Nose measures 26" around and 7" deep, Crown adjusts 18 1/2" – 28", Throat adjusts 12" – 17" Adjust the strength of the "quick grip" crown piece depending on how much of the closure you insert: The harder to breakaway needs more closure, the easier to breakaway needs less.