GOGO Custom 20 PCS Aluminum Emergency Whistle, Laser Engrave Whistles with Carabiner Key Chain for Outdoors Hiking Camping

*Design & Easy to Carry Equipped with carabiner key chain and key ring you can easily attach the whistle to the backpack zipper, keys or strings, bring you more convenience.*Practical Gifts for FriendsYou can give the whistle with lanyard 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 UsesThese whistles are suitable for referees, coaches, training, teachers, lifeguards, self-defense, survival, emergency, herding, training bird or dog, gym, sports training, basketball, soccer, football and other sports or anyone who needs a whistle. Also fit for park rangers and emergency-hiking-survival for outdoor activities.

• Custom Your Whistle: You can add name, logo, slogan, number, saying, and cartoon on it.
• Printing Method: Laser Engrave.
• Size: Length whistles is 4.5cm/1.8 inch, diameter of the whistles is 0.8cm/0.3 inch, overall length 3.9inch/10cm (with Carabiner Key Chain). Imprint area: 1.2 L x 0.2 W inch (3 x 0.5cm)
• Wide Application: The high pitch shrill up to a mile away heard especially in emergency easily to get attention. With carabiner key chain and key ring, ideal for Camping, Hiking, Hunting, Safety program, Travel, Outdoors Sports and Emergency Situations.
• Package Includes: 20pcs x whistles, The whistle is made of Aluminum alloy.