Features: Food grade silicone milk bottle lid ensures safe, nontoxic storage while featuring a leak proof design to maintain freshness and prevent spills. These generic silicone covers securely fit most glass milk bottles with a sealed seal, effectively reducing oxidation to extend beverage shelf lifespans. Ideal for families, healthy parents, and user friendly households seeking efficient food preservation solution for daily dairy consumption. Perfect for kitchen storage, outdoor picnics, or travel use, these reusable lid keep milk, juices, and plant base drinks freshness. sturdy and dishwasher safe, these silicone milk bottle caps offer sustainable replacement option for once-only use covers while resisting odors and stain. Specifications: Component:Silicone Diameter:Approx.4.2cm/1.65inches Package Includes: 6Pcs Silicone Bottle Caps note: Please allow 1-2cm error due to manual measurement. Please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks!