Nylon Muzzle. JorVet introduces an expanded line of high quality water resistant nylon muzzles that have a side easy-release snap buckle. Comes in a variety of sizes. Features: *Safety: Muzzles fit securely with adjusting straps for a snug fit. *Comfort: Lightweight nylon feels and looks more professional than gauze roll. *Quality: Reinforced stitching to assure long-lasting use. **NOTE** To best determine muzzle size, measure snout circumference. J0169AA Chihuahua Type Breeds. Snout Circumference 3.5". Navy Color for dogs <5 Lbs.