Feature: 1. SILICONE MATERIAL: Flower straw cover is made of food‑grade silicone material with no unpleasant odor, so you can use it with confidence and clean it with ease. 2. PERFECTLY COMPATIBLE: Straw tip cover is designed for stanley straws. You don't have to worry about the wrong size, perfectly compatible with for Stanley 30oz 40oz glasses with handle straws. 3. KEEPS IT HYGIENIC: Straw tip cover prevents straws from being contaminated by airborne dust and debris, and prevents bugs from getting into the glass, keeping both the straw and the glass hygienic. 4. STRAW PROTECTORS: Flower straw cover cap prevents dust when not drinking and spills when on the move, great for outdoor activities. 5. EASY TO USE: Cute silicone straw cover looks very cute and easy to put on and take off when using. This is the perfect present for mug lovers. Specification: Item Type: Flower Straw Cover Cap Material: Silicone Diameter: Approx. 9-10mm / 0.35-0.39in. Package List: 4 x Flower Straw Cover Cap Note: Please allow some error due to manual measurement.