Fits 910 mm straws: Suitable for Stanley 30 oz and 1.2 liter drinking straws, as well as glass and stainless steel straws with a diameter of 910 mm. Straws are not included. High-quality silicone: Made of food-safe silicone material, reusable, durable, hand washable and dishwasher safe. All materials are safe, non-toxic and odourless, made from food-grade silicone. The silicone straw cover helps protect against dust and unknown particles, enhancing the hygiene of your drinking experience. Easy to use: The straw cover attaches directly to the straw and stays securely in place. It seals the straw to prevent contamination from airborne dust, maintains cleanliness, and is simple to install and remove. Stands stably on the cup and helps distinguish your straw from others. Decorative design: This 8-piece set features a cute floral pattern, adding a fun and stylish touch to your Stanley cups and other compatible drinkware. Combines practicality with visual appeal. Ideal gift choice: A thoughtful and creative gift for family and friends, perfect for parties, holidays or special occasions to enhance the drinking experience with a decorative accent.