Keep your homemade ferments safe and healthy with this breathable fabric jar cap. Designed for kombucha, apple cider vinegar, and other fermentation projects, this reusable cover allows air to flow freely while keeping out dust, fruit flies, and other contaminants. Made from durable, washable fabric with a snug elastic edge, it fits securely over most standard jars. Perfect for both beginners and experienced fermenters, it’s a simple, eco-friendly alternative. 

Made from 100% cotton fabric and thread, and elastic. Machine washable. 

Fits regular, wide-mouth, and gallon sized jars.