Marine Survival Neon Orange Flat Safety Emergency Alert Whistle with Lanyard - 12 PACK Package Includes 12 Flat Individually Wrapped, Durable Whistles with Lanyards Flat design prevents whistle holding water Loud, shrill, dual tone audible from great distance makes it ideal For Camping, Boating, & Hiking Aids in land or sea rescues; Use on life jackets, vests, foul weather gear, ring buoys, rafts, key chains, etc. Developed for the U.S. Navy, Life Guards, Airlines and Shipping companies