Davis Key Buoy Self Inflating Keychain

If the keychain falls into the water, the plastic case will automatically open and the tube will inflate with air. The keychain has a maximum buoyancy of 80 grams and can float for over an hour. Once activated, the keychain cannot be re-used. It measures 61mm in length, 41mm in width, and 15mm in thickness. The inflated tube is 47cm long and protrudes above the water, making it easy to grab.