Built for the trail, the river, and everything in between. Our Outdoor Style All Nylon Martingale Collar is the everyday workhorse - lightweight, weather-resistant, and ready to go anywhere your dog does. Woven from heavy-duty polyester webbing with a smooth coated finish, this collar resists mud, water, sand, and burrs. Wipe it clean with a damp cloth and it looks new again. The quick-release side-squeeze buckle snaps open with one hand, and the welded steel D-ring sits flush so it won&';t snag. Made in Colorado, USA. Stitched with bonded polyester thread that won&';t unravel. Finished with European-grade steel hardware that resists rust and corrosion through every season. Size chart: S - 5/8" wide, 10"-16" neck range M - 3/4" wide, 12"-20" neck range L - 1" wide, 16"-24" neck range Measure your dog&';s neck snugly, then add 2" for a comfortable fit.