One dozen multicolored duck call whistles for your next entertaining event. Each duck whistle measures 4 inches long and features a bright neon color. These duck call whistles are perfect as party favors or event giveaways. Teachers can use them as student prizes or rewards in the classroom. Kids will enjoy quacking along to their favorite songs. Take these along to cheer and root for your favorite team at your next stadium event. Three of each assorted colors.