Ruffwear - Crag Dog Collar, Soft, Durable, Reflective Webbing MADE FOR ADVENTURE: Ruffwear's Crag Collar is made from durable, woven fabric that ensures a lasting connection to your dog. The reflective trim lets you and your pup play and been seen in any environment. GEAR UP AND GO: The easy-to-use side release buckle lets you quickly put on, take off, and adjust the collar. Spend less time gearing up and more time on the trail. THE RIGHT FIT: Measure your dog's neck where a collar would comfortably lie and select one of the following sizes: Small (11-14 in), Medium (14-20 in), or Large (20-26 in). A STRONG CONNECTION: Protect your pup with the Crag Collar. The single-piece aluminum ring provides a strong, secure connection to your favorite Ruffwear leash. DESIGNED FOR DOGS: The Crag Collar features a separate Quick Ring for ID tags that's designed to make it easy to add and remove tags. The silicone tag silencer means less noise.