Environmentally Friendly Wood Material - This whistle set is made of high-quality wood, with a smooth surface, durable, and well-made, suitable for children to play. High-Quality Party Supplies - This train whistle can be used for various party noisemakers, such as birthday parties, Halloween, Christmas, or theme parties. Easy to Use - The edge of each whistle is polished; just blow it to produce a cool and loud whistle sound, similar to a train whistle. 4-Tone Train Whistle - Blow the 4-tone train whistle to produce the sound of an old-time locomotive; it sounds like a real train, adding fun to children's parties. Great Gift - This train whistle set is ideal for party favors and accessories, including birthday parties, Halloween, Christmas, or theme parties. Its a perfect addition to a childs train-themed toy set or costume.