Product Description Our natural cork pea makes our whistle easy to blow a loud, crisp sound every time, even if you're a little out of breath. Great for coaches and referees alike, the demonstrative shrill cuts through crowd noise and player chatter with ease. Wear it on or off the braided lanyard, and adjust the length with the yellow adjustment bead. You can use it easily and effectively in any situation. STAINLESS STEEL, NEVER NICKEL Many coaches’ whistles are nickel plated and easily show wear and tear from the elements and time of use. Our whistles are solid stainless steel that don’t rust or corrode. Leaving it looking shiny and new always. CONVIENT TO USE A light and comfortable nylon lanyard comes with each whistle. You can adjust the yellow bead to control the length of the lanyard. Find the setting most comfortable for you and lock it in. PERFECT FOR COACHES AND REFEREES Our whistles are made with natural cork pea so ours are clearly louder and much easier to hear in loud areas. The natural cork pea affects the air flow, creating a loud, shrill sound with less air pressure. If you are a coach or a referee and you need a professional whistle, then our stainless steel whistle is exactly what you're looking for. WIDELY USED sports whistle(basketball, volleyball, football, soccer etc.), referee whistle, coach whistle, teacher whistle, guard whistle, lifeguard whistle, emergency whistle, survival whistle, self-defense whistle, police whistle, kid’s whistle, safety whistle, party favors whistle PACKAGE--- 2PCS plastic whistles with lanyards. These whistles are great for referees, coaches, training, teachers, survival, emergency, school, gym, etc. LOUD CRISP SOUND--- The whistle sound is loud and clear. Easily up to 120dB. FREE YOUR HANDS--- Each whistle comes with a black lanyard, you can hang easily around your neck, or on a wall mount, helps you free your hand. PREMIUM QUALITY--- Made with thicken plastic, more durable than other plastic whistles. GOOD SERVICE--- All our whistles are 100% satisfaction guaranteed. Please feel free to contact us for anything, we will response within 12 hours.