GOGO Set of 4 Assorted Whistles with Lanyard Classic Pea-Less Sport Whistle Safety Whistle PACKAGE & DIMENSION --- Price is for 4 pieces; Package: 1 piece / individual plastic box. Whistle Size: 2-1/6 x 4/5 x 4/5 inch; Box Size: 3-1/3 x 1 x 5/7 inch. HIGH QUALITY MATERIAL --- 100% made of high-impact ABS plastic; Nylon detachable neck lanyard; Metal lanyard ring. Safe, durable and sturdy to use. PEA-LESS DESIGN--- Whistles are just easier to use. Pealess design means no moving parts, nothing to obstruct sound, and nothing to jam, break or freeze. The prime whistle produces a lower-tone pitch. The distinct safety-sounding whistle is ideal wherever the need for a different sounding whistle exists. CONVENIENT TO CARRY --- Comes with a lanyard, you can carry it easily and convenient. The lanyard of the plastic whistle is attached by a metal ring. You can wear it around your neck. And it can be easily attached to keys, ID badge reels or belt clips etc. Keeps it securely in place while wearing during any activities like coaching, refereeing, or lifeguard. MULTIPLE USES --- These whistles are suitable for referees, coaches, training, teachers, lifeguards, self-defense, survival, emergency, herding, training bird or dog, gym, school sports training, basketball, soccer, football and other sports, or anyone who needs a safety whistle. Also fit for Law Enforcement, Park Rangers, and Emergency-Hiking-Survival for outdoor activities.