Simply Gorgeous Metal Whistle Perfect for Sports Day, Teachers, Referee, School, Party Bags Metal Whistle Colours available: Blue, Silver, Black & Purple Material: Aluminium Approximate size: 47mm x 8mm Comes complete with Keyring Revolutionary in design and function This is a well designed robust high quality whistle Durable & lightweight Perfect for various different uses including: Sports Day, School Teachers, Referee, Sports, Dog / Puppy Training, Party Bags and much more.... Sold Exclusively By Simply Gorgeous