Features: 1. Made of high-grade material, which is durable, safe, non-toxic and eco-friendly. 2. With great sound penetration, can easy to whistle and make a loud, clear sound. 3. Dolphin shape design, more fashion and lovely. 4. Lightweight design, comes with a lanyard, easy and convenient for you to use. 5. Suitable for outdoor survival, life-saving, PE lesson, and basketball or football game. Specifications: Material: ABS Color: Light Blue, Black, Grey, Dark Blue (Optional) Size: 6 * 2.5 * 1.8cm / 2.4 * 0.98 * 0.71inch Package Weight: approx. 26g Quantity: 1pc Package Included: 1 x whistle 1 x lanyard 1 x teeth guard