This listing is for an eco-friendly, Screw-on Bamboo Mason Jar lid with Straw Hole. Mason jars and straws are NOT included! Made in Portland Oregon!
This is a precision machined screw on lid that uses a silicon gasket for leak-proof sipping. It comes in Regular and Wide mouth size. The diameter of the straw hole is 0.55 inch and works with most (re-usable) straws including boba straws. When in doubt, measure the diameter of the straw. If it is less than 0.48 inch it will work with this lid.
The lids are treated with a food-grade mineral oil. It is recommended to wash them in hand warm lightly soapy water after use. Also occasionally retreat the bamboo with mineral oil. The silicone ring is removable so you can clean under neath it as well.