GoTags Reflective Waterproof Dog Collar - Personalized with Pet Name and Phone Number. 100% Waterproof and Durable. Our durable, reflective, "no stink" waterproof dog collar is designed for active dogs. This comfortable collar is impervious to dirt, moisture, and odors, and can be easily rinsed clean in seconds. Personalized with your dog's name and phone number permanently laser engraved directly into the reflective band of the collar, eliminating the worry of your dog losing its identification. To see all our pet ID products click on our brand name GOTAGS above the product name. Three vibrant color options: Blue, Hunter Orange, and Hot Pink Available sizes: 14, 16, 18, 20, 22, & 24 inches. Collars 14-16 inches are 3/4-inch-wide, and 18-24 inches are 1-inch-wide. Please see the sizing image on the product page for ordering the correct collar size. COLLAR SIZES are determined by the measurement from the middle of the buckle to the first hole - which is the smallest size the collar will adjust to. To determine the correct size, use a soft tape measure or piece of string and wrap it snugly around the base of your dog's neck - snug enough so that you cannot fit any fingers under the measuring tape. Round measurement down to the nearest even number. For instance, if your dog's neck measures 17 inches you would order a 16 inch collar. TO ORDER click CUSTOMIZE NOW then select collar color, size and enter personalization.