• Package: One package contains 20 pieces safety survival whistles with lanyard it's suit for team and individual use.
• Quality whistles: this set of whistles is made of good quality plastic, very lightweight, waterproof and durable. Double tube designeach whistle can produce high and low frequency sounds.
• Conspicuous colors: These whistles are designed to be visibly orange, very bright, can attract others' attention outside, help you to be found easily .
• Special design: the survival whistles are designed with a clip and a nylon cord for securing on your belt or life jacket.The length of the cord can be adjusted freely. It's convenient to hang on the neck and wrist wherever you want.
• Easy to use: these whistles are easy to let out high-pitched sound which is can be heard from a long distance, can be applied in sailing, hiking, boating, kayaking,camping, hunting,emergency survival, rescue and so on.