NON BRITTLE PLASTIC, can't crack or break, bright color-highly visible, never fade and non corrodible, pretty good whistles to carry in case of emergency.
PEA-LESS, FAIL-SAFE, pealess design, works well in any conditions, actually won't freeze or stick to lips like METAL ones in cold environments.
120 DECIBLE, two sound chambers design, high pitched noise maker, audible over 1 mile, easier to be heard, work great as signal whistle.
WITH CLIP and LANYARD, has multiple attachment options, can easily loop through backpack, sailboats, hike gear, life jacket, kayak PFD, paddle board; meanwhile great for attaching to your belt or shoulder straps. (Lanyard not designed for neck)