Easy Fermentation Lids for Wide Mouth Mason Jars - 4 Waterless Airlock Fermenting Lid Kit with Easy Release Tab - Refill Pack (Pump Not Included)

These lids are so good, I now have 15 of them... Honestly, buy them with confidence.

Good lids, fits a pump I already had. Makes fermenting easier, as you can remove atmosphere from the space above the vegetables

Very nice many thanks

Beware these do not fit many jar sizes. I figured wide mouth was a standardized thing the way these are sold. I trusted the people reviewing and I didn't see many negative. Completee waste of food that will go off before I get a replacement system. Disappointed with the people reviewing why give 4-5 stars if you had to try multiple containers and only one worked.

Mostly easy to use and the recipe leaflet with it is helpful. I have bought several sets with great results, but the last 4 had issues as 3 leaked air in on first use. ..

Disaster for me. Despite everything being sterilised and fully weighted no batch survived.I've no idea what went wrong. I've made kimchi and sauerkraut in the past using kilner jars with clip lids without any problems at all.I'll give it another try but I'm wary.Overall I think I prefer to avoid plastics which end up in landfill eventually.

Decent product, appears sturdy, but doesn't fit my Kilner 1l wide mouth jar

While using these lids I had a mould growth in one of the 2 jars of chilli mash ferment. Both jars sterilised and lids sanitised before use. They’re nice and sturdy but they not always work.