Each glass pop-top jar by 420 Science is made with a solid glass lid with an airtight plastic gasket - guaranteed to keep your shrubberies nice and fresh! The glass is machine blown and is done so proudly by our close neighbor, the United States.
Also, there's no need to worry about the decal on your glass degrading.... it won't happen! Every glass decal you see is 100% permanent. We likey!