Western Cowgirl Childrens Birthday Party Supplies - Cowboy Boot Plastic Cup (16) Includes 16 Western Cowboy Boot Molded Plastic Sipper Cups. Holds approximately 8 oz. Add additional party tableware, kits, decorations, favors, games, and activities to complete your celebration and entertain your guests. Great for childrens birthday parties, kids school parties, a pizza party, sleepovers, prizes, favors, or a theme party. Perfect for fans of westerns, cowboys, cowgirls, or Sherriff Callie.