GOGO Custom 20 PCS Aluminum Whistle with Laser Engraved, Safety Emergency Whistles for Outdoor Hiking Camping Hunting Fishing

*Double Tube Design These whistles can provide up to 100 decibel dB sound power, enough to be heard over a mile away. It works well as a signal whistle. You can use it easily and effectively to draw in public attention during an emergency situation. Pea-less design means no moving parts, nothing to obstruct sound, and nothing to jam, break or freeze. The whistle with key chains, so it can be tied to backpack, belt or hung around the neck. *Practical Gifts for Friends You can give the whistle to your family members, friends relatives, colleagues and neighbors on Christmas, Thanksgiving Day, New Year, graduation or other special days, and they will be delighted after receiving these gifts. *Multiple Uses These whistles are suitable for camping, hiking, backpacking, hunting, archery, fishing, swimming, boating, kayaking, marine sporting events any kind of outdoor activities, also for dog training.

• Custom Your Whistle: Printing Method-Laser Engrave. You can add name, logo, slogan, number, saying, and cartoon on it.
• Whistle size:2.1"L x 0.6"W x 0.3"H (5.5cmx1.5cmx0.7cm); Imprint Area:1.9 L x 0.3 W inch (5 x 0.7cm)
• Super Loud: Double-tube design, each whistle can provide up to 100 decibel sound power, you get people's attention when needed, enough to be heard over a mile away.
• Wide Application: Perfect choice for camping, hiking, hunting, fishing, boating any kind of outdoor activities.
• Package Includes: 20pcs x whistles. The whistle is made of aluminum alloy.