Pampered Pooches Embroidered Id Collars Embroidered with Pets Name and Phone Number for easy identification. Made of polypro nylon extremely durable, solid steel D ring, adjustable, double lock snap closure. Sizes: ex-sm=6"-10", sm=10"-14", med=14"-16", lg=16"-22", ex lg=22" and above. Colors:black, brown, red, royal blue, lt blue, navy blue, orange, yellow, green, lime green, hunter green, dk teal, lt teal, pink, purple, lavender. 100+ thread colors, glow in the dark threads, (they are colored but have an very light hue) multi colored threads.