To customers: life is full of surprises. Package Includes: 1 x Turbo Whistle Item Name: Turbo Whistle Material: copper alloy Features: Universal, Easy to Install, Mini Size, Long Lasting Size Details: S, L: 10.2cm, W: 5.2cm M, L: 10.3cm, W: 5.9cm L, L: 11.6cm, W: 6.3cm XL, L: 12cm, W: 6.9cm Specifications: XL,The length of this product is 12cm and width is 6.9cm. L,The length of this product is 11.6cm and width is 6.3cm. M,The length of this product is 10.3cm and width is 5.9cm. S,The length of this product is 10.2cm and width is 5.2cm. Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. We strive for excellence. And hope you have a nice day!