Bright colors and classic patterns come together for a stylish, practical, and downright fabulous look in these Casual Canine Pooch Patterns Collars. Strong, durable nylon construction Black plastic buckles and nickel-plated D-rings Blue Bone, Red Bone, Pink Argyle, and Blue Argyle designs Material: 100% Nylon; Plastic buckles and nickel-plated D-rings Sizing Guide: To determine the proper size, measure the circumference of pet’s neck and add 2". Sizes: ⅜" Collar adjusts to fit necks 6"–10" ⅝" Collar adjusts to fit necks 10"–16" ⅝" Collar adjusts to fit necks 14"–20" 1" Collar adjusts to fit necks 18"–26"