HOSL 24 Pcs Whistles-Stainless Steel Whistles, Comes with Lanyard, Great for Referee, Coaches, Training, Sports, etc 24 pcs whistles, comes with black lanyard to keep hands free These are NOT cheap plastic whistles that will easily break Material: stainless steel Features a bold, crisp sound Suitable for referee, coaches, training, sports, or anyone who needs a safety whistle