Make sure you have this Lifesystems Mountain Whistle in your pack when heading out on your next adventure. It is made from a tough, lightweight aluminium alloy.The Lifesystems Mountain Whistle is made from an anodised aluminium alloy that is both light and durable. It is able to reach 100db, ideal when you need to make yourself heard. The keyring attachment makes it easy to store and carry.Features Anodised aluminium alloy - tough and lightweight.Keyring attachment - prevents you from losing it.Loudness: 100dB - make yourself heard to those in the distance.Dimensions: 12x12x60mmWeight: 11g