These whistle balloons are good for children's parties, combining the fun of balloons with the excitement of noisemakers. Each balloon features a built-in whistle that produces a delightful sound when inflated and released. Ideal for birthday celebrations, these balloons add an extra layer of joy and entertainment to any event. Features -Color:Multi -Material:Latex, plastic -Size:5.50X3.00X0.10cm/2.16X1.18X0.04in -Children's toy: good designed for children, ensuring safe and enjoyable playtime. -Birthday party supplies: ideal for birthday parties, adding a fun and festive atmosphere to any celebration. -Multi functional design: can be used both as a whistle and a balloon, providing versatile entertainment options. - : features a that produces a clear and crisp sound, enhancing the play experience. -Unique design: standout design that adds a touch of personality and uniqueness to any party or event. Package list: 200pcs whistle balloons