Features: brand new and high quality Pealess whistles cut through the noise in all conditions. Perfect for refs and coaches. All-plastic body and food grade plastic means these whistles are rustproof and safe. Impervious to moisture and can produce a shrill while for frozen or soaking wet. Choose what's best for you, features handy finger grips and a comfortable mouth grip. 2in adjusting finger grip comfortably fits between two and three fingers. Specifications: Material: ABS Plastic Color: Black/Blue/Red/Yellow Package Weight: approx.28g Ring Size: approx.5.4cm/2.12in Total Height: approx.7.7cm/3.03in Whistle Tip Size: approx.4.5x2cm/1.77x0.79in Package Includes: 1Pc x Training Whistle note: Please allow 1-2cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!