Customize this collar with your pet's name and home phone number! Embroidery is available in a wide range of colors. Maximum of 20 characters available for embroidery. Please allow extra time for delivery of personalized items. 1/2 inch Width: The perfect starter collar for your puppy or everyday collar for your pocket-sized pet. A slightly oversized side-release clasp makes for easier fastening and unfastening. Recommended for dogs up to about 20 lbs.3/4 inch Width: The most versatile width we offer, the perfect fit for the widest range of dogs from large breed puppies to full grown medium sized dogs. Fully adjustable, with a welded steel D-ring and the strongest side release buckle on the market today.1 inch Width: Fully adjustable, with the strongest side release buckle on the market today. Suitable for Medium and Large dogs - even the largest St. Bernard.