Features: Experience safety and clarities with our whistle guard, designed to deliver a crisps sound while protecting your teeth during sports activity. Make from food grade pvc, this whistle is both colourless and odorless, ensuring a comfortable and healthy use for referees and athletes alike. Great for coaches, sports referees, and athletes, our whistle guard offer a comfortable fit that caters to professional across various sport disciplines. Whether it's for a soccer, baseball, or school sports class, this whistle guard is your sport accessory for any competitive or training environment. Embraces the innovative designs that protect your sports gear, makes you standing out in game or practice session. Specifications: Materials: Food Grade PVC Color: As The Picture Shows Package Weight: approx.35g Styles Optional: 2 Styles are Available as Shown in the Picture. Size: approx.1.5x2x1cm/0.59x0.78x0.39in Package Includes: 20Pcs Referee Whistle Cover note: Please allow 1-2cm error due to manual measurement. Please make surer you not mind before your bid. Due to the differences between different monitors, the picture may not reflect the actual color to the item. Thanks!