VAS Small Emergency Sports Whistle with Lanyard (10 to Choose From) (1) Single piece aluminum whistle: BLUE WHISTLE & RED, WHITE & BLUE LANYARD Dimenisions: Length: 2-1/2  Diameter: 1/2  Aluminum Body  Keychain Key ring for attachment to a lanyard or keys (1) RED, WHITE & BLUE Lanyard: 1/8" X 36" Round Colored Nylon Cord with "J" Hook Great for Camping, Hiking, Backpacking, Travel, Outdoor Activities, Security Emergencies Etc