SUYAMI 12 Packs Sport Whistle with Lanyard, for Coach, Referee, Official (Black)

["Includes 12 black plastic coach whistles, 12 adjustable lanyards and 12 mouth guards.","These coach whistles are made of thickened high-impact ABS plastic, sturdy and durable. Equipped with soft silicone mouth grip to protect your teeth and lips.","Classic pea whistle design, even kids and elderly can sound it effortlessly. Max sound level: 120dB (Sound over 120dB may cause hearing damage).","Coach whistle size: length 1.8 inches / 4.6 cm, width 0.7 inches / 1.8 cm, height 0.8 inches / 2.1 cm. Lanyard length: 16.5 inches / 42 cm, fitted with adjustable buckle and detachable hook.","These referee whistles are great for coaches, referees, teachers, training, emergency, outdoor survival, school, gym and daily use."]