Collar Pattern (see chart below): Dotz Dawg Haus Bonz: Black Bonz: Pink Bonz: Blue Envious Hearts Antsy Arcs Color Trees Blossoms Stripeez: Blue Stripeez: Pink Pawprints: Navy Kings & Kweens Aloha Breeze Sunny Pastels Hot Rod Henry American Flags Stars & Stripes Camopink Camouflage Sailboats Chili Peppers Red Hawaii Waves Ballz Racing Flags Chunky Hearts Butterflies Apache Ducks Sunflowers Argyle: Pink Argyle: Blue Hearts Pawz Daisies Island Tropics Flowers Heavenly Leopard Stained Glass Zoo Crew Lucky Charmz Crazy Critters Pueblo Hoofin' Heifers Fishes Treats: Blue Treats: Pink Maui: Pinkle Maui: Black Falling Leaves Ornaments Fancy Firs Spooky Trick or Treat Holiday Plaid Snowflakes Rudolph Holiday Lights Prancer Frosty     Collar Size: XS 8"-11" S 12"-17" M 16"-24" L 19"-31"