These work great. They fit any regular, wide mouth or weck jars. I have found that using one of these in my Sourdough Jar, is just the amount of airflow it needs. I'm in arid Idaho, so I often will wet it down first and then put it on and my start loved that.
So many fun patterns. Drop me a note at checkout if there is a color you would love. I can't guarantee it YET but I'm working to have exact inventory set aside for online orders.
