Wilderness Survival Whistle/outdoor Key Whistle/training Tool/multi-function Triple/random Color (7pcs) Jiujiuso The product is shipped based on the color or size of the main image of the product page. Survival Whistle Survival Whistle Aluminum Alloy Whistle Outdoor Whistle Use: Suitable for outdoor sports such as hiking, climbing, cross-country running, hiking, etc . Size: 9*46mm Color: random color (about 7 colors) Shipping quantity: 7pcs Aluminum alloy long professional outdoor survival whistle Sound is loud, transmission distance is long. When traveling outdoors, it is can help you confirm your orientation, avoid getting lost, find a companion, etc. If you want to have the perfect outdoor walk, be sure to prepare carefully before leaving and be sure to check if the whistle is brought before leaving . Due to lighting and screen differences, the item&color may vary slightly from the pictures. Please allow slight size difference due to different manual measurement.