Crown Sporting Goods SCOA-001 Stainless Steel Whistle with Lanyard - G is the perfect accessory for any referee or coach. This whistle is made of solid stainless steel and features a bold, crisp sound that is loud and clear. The lanyard is also made of stainless steel and is adjustable to fit any neck size. This whistle is also corrosion resistant and comes with a one year warranty.