[Superior stainless steel whistle, sturdy and wearable aluminum alloy carabiner. [Double tubes whistle can provide up to 150 decibels, can be heard from far distance. [Whistle for emergency situations when camping, and carabiner could hang or fasten some items. [A keychain of whistle works with carabiner for tying to your backpack or belt conveniently. [A perfect set for outdoor activities, both lightweight and easy to carry. Attention:1. Due to manual measurement, please allow for a slight error. Please make sure you don't mind before bidding.2. Colors may vary depending on the monitor, please understand. Attention:Hello, please pay attention to your shipping address when purchasing products. If your shipping information (such as name, street, house number, doorbell/email without name, etc.) is incorrect, the order will not be delivered correctly