Rich in Quantity: there are 48 pieces of whistles with lanyards in black, and the adequate amount and various colors can meet your daily use and replacement demandsLoud Whistle: the sports whistle with good sonority, crisp and loud, does not use a pea as the core, which can be blown easily, and its volume and pitch can be controlled; In addition, the whistle can be applied in many occasions to attract others' attention rapidlyEasy to Hang: there is a lanyard fixed at the top of each basketball whistle, which makes it simple and convenient to hang the sports whistle on your neck for use or hang it on wall for storageCompact and Portable: the referee whistle measures approx 1 77 x 0 78 x 0 67 inches, weighting about 9 g / 0 31 oz, compact and lightweight, with the lanyard measuring about 48 cm/ 18 9 inches in length, which is long enough to hang at some places you want and make it portable with saving spaceLong Serving Time: the lifeguard whistle is made of quality plastic, sturdy and serviceable, safe and odorless, and the lanyard is made of nylon, which is reusable and not easy to deform or break for long term use