A fermentation lid with a built-in airlock, so your ferment can breathe out without letting anything back in. That means clean, mould-free sauerkraut, kimchi & pickles with no daily burping. Fits our 86mm Wide Mouth jars. Pop it on, let nature do its thing & check back in 5 days. 1 Lid - $8.95 Bundle & Save – 3 Lids - $23.95 Bundle & Save –6 Lids - $44.95 - box contains 1 Green Silicone Lid & 1 x Metal Stainless Band - cross fits other wide mouth jars : Kilner, Ball, Kerr, Agee Special - BPA free, non toxic to people and the planet - automatic venting waterless self burping lid - complementary glass food weights available separately - FDA approved Food Grade Silicone A simple way to make a range of homemade fermented healthy produce in a jar ~ Join us on the Fermentation Revolution