Transform your jars into your new favorite on the go fruit infusion drinkware. Our Fruit Infusion Lid is BPA free and made from recycled materials, especially designed to bring even more uses to your regular mouth mason jars (jar not included). We recommend using a 16 oz. jar for best use. This bright green lid snaps open and closed, providing you with a drip-free seal when properly secured. To use, apply force until lid snaps in. If you are having difficulty assembling, please run the band over hot water for 30-60 seconds and then try to snap in the Jarware. Cover, sip, go. It's as easy as that. Because, let's be honest, everything's better in a mason jar.