7-in-1 Survival Function Whistle, Outdoor Multifunctional Tool Safety Whistle with Lanyard, Ideal for Kayaking, Boating, Hiking, Camping, Climbing, Hunting, Fishing, Rescue Signaling. 【High Quality & Easy to Carry】Whistle is made of ABS high strength, fall resistance and high temperature engineering material, lightweight and fail-safe nice whistle works well in any conditions with excellent airflow design.