Come and Check Our Promo Solutions.Made of aluminum alloy material. Comes with keychain and lanyard. Lightweight, easy to carry. Double tubes emergency whistle can provide up to 120 decibels, enough to be heard at long distance. Be used in all-environment all-weather, rainy day, humid weather with excellent airflow design. Ideal for camping, hiking, hunting, fishing, boating any kind of outdoor activities. Pls check inventory and detailed info with us before placing your orders.