Add some noise or special fun to your Thomas & Friends train birthday party with these nifty whistles made out of durable plastic. A perfect party favor for treat bags and gift boxes! Package contains total 12 plastic whistles featuring everybody's favorite Thomas the Tank Engine (4 pcs), Percy the Green Engine and James the Red Engine (4 pcs). Whistles measuring 3-in x 1 5/8-in. Whistle colors come in blue, green and red, each with a hole to make into a necklace if desired. Recommended for ages 3 and up.