The PVC straw lids are made of high quality materials, BPA free, safe and odorless, durable and reusable. After you clean and dried, you can stored for next time. You can use it with confidence. Our straw caps are suitable for all types of straws with an outer diameter of 7-8mm, The inner diameter of the straw toppers is 8mm. These straw plugs can be fixed on straws directly, not easy to fall off. They effectively block dust and other foreign objects from entering your drink. And they look cute too! These fit 7-8mm straws 12pcs NWT Smoke and Pet Free Home