Food-grade stainless steel, safe, durable and easy to use, much better than the plastic whistles. The solid stainless steel whistle won't readily rust or corrode. Whistles are gifts for coaches, P.E. teacher, referees, linesmen and officials as well as for lifeguards, animal trainers, and traffic police officers, Football Coach, Soccer Coach, Basketball Coach, Volleyball Coach, Baseball Coach, Hockey Coach. These whistles are great for referees, coaches, training, teachers, survival, emergency, school, gym, etc. Complete Gift Set: 1 Piece Whistle with Lanyard & Premium Grey Gift Box:You will receive 1 metal whistle paired with a comfortable lanyard, packaged in an exquisite grey gift box for ready-to-give gifting, no extra wrapping needed. Premium Stainless-Steel Construction & Loud 120dB Output：Made of food-grade solid stainless steel for safe and long-time use. Built-in natural cork pea delivers loud, crisp sound up to 120 dB, easily cutting through crowd noise for clear on-field signals. Ideal Practical Gift for Sports Professionals & Officials：Perfect gift choice for coaches, PE teachers, referees, linesmen, lifeguards, animal trainers and traffic officers. Great for football, soccer, basketball, volleyball, baseball and hockey coaches for games and daily training. Personalized Engravable Coach Whistle Design：Features a soft lanyard printed with “Best Coach Ever”, and supports custom unique word engraving. Matched with an elegant gift box to deliver thoughtful, memorable personalized gifts for your beloved coach. Precise Compact Dimensions for Easy Carry：Whistle: 1.8 * 0.7 Inch; Lanyard: 17.8 * 0.8 Inch; Gift Box: 2.2 * 2.2 * 1.8 Inch. Compact lightweight size for convenient wearing, storage and portability. ASIN B09LVCJ79K Color Player Coach Material Aluminum Brand Name QIBAJIU Model Name Whistles Part Number QIBAJIU Manufacturer QIBAJIU Package Weight 0.03 kg Suggested Users unisex-adult Included Components Whistle Lanyard Warranty Description No Item Package Dimensions L x W x H 3.11 x 2.76 x 1.22 inches