This whistle serves a practical purpose in sports and outdoor survival, while also holding your keys. The sturdy aluminum alloy material will stay vibrant and eye-catching thanks to anodizing technology. Its small size, light weight and solid construction makes this a long lasting promotional tool that will display your logo or branded message for all to see for a long time! Pricing based on laser engraved imprint. White imprint only. Other color imprints are available through screen imprint. 2 11/16" L x 3/8" W