2pc Whistle, Stainless Steel Super Loud Sports Whistle with Lanyard, Perfect for Referees, Coaches, Polices, Outdoor Sports Super Loud--- There is a cork pea in our whistle. Our cork pea is made of natural large wooden cork, which is different from synthetic pea. When you blow it, it vibrates at a higher frequency, causing the whistle to emit a louder sound. It can reach up to 120db quickly. High Quality--- Made of stainless steel. Contrast that with plastic whistles or fake ones; no matter how you use them, you don't have to worry about breaking them. It always looks like a new one. User-friendly--- Each whistle comes with a soft braided lanyard for hands-free use. Package--- 2pcs stainless steel metal whistle with lanyards. You can use it anywhere you need to get others attention quickly. You can use it as a coaches whistle, referees whistle, sports whistle, PE teacher whistle, police whistle, pet training whistle, whistle, emergencies whistle, party favors whistleand more. size4*1.9cm.weight10.3g*1. pack*2.