<b>Reusable Bamboo Mason Jar Lids compatible with Wide Mouth Mason Jar Canning Jar for Drinking</b></br> -Made of premium quality carbonized bamboo, not easy to rust and durable</br> -With three different types of stainless steel straws, reusable and easy to clean </br></br> <b>Tip: </b></br> Carbonized bamboo is a kind of bamboo product which is made of bamboo raw materials placed in a special carbonized container and formed after high temperature and pressure. It is safe to use and has a light bamboo fragrance.