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【Food-grade Silicone,Safe & Healthy】Made of 100% food-grade silicone, free of harmful substances, perfect for regular mouth mason jar lids, safe for direct contact with sauces, pickles, baby food, beverages and all kinds of food. Dishwasher safe for peace of mind.
【One-Way Valve for Safe Fermentation】Built-in one-way valve automatically releases gas, prevents excess gas & overpressure inside the jar, ensures safety and leak-proofing. No manual operation required, hassle-free fermentation experience.
【Perfect Fit for Regular Mouth Jars】68mm diameter design fits most standard mason jar lids regular mouth, creates a tight and secure seal. Note: NOT compatible with wide mouth jars.
【Multiple Colors for Easy Organization】Vibrant colors help you quickly distinguish jar contents at a glance, keeping your kitchen neat and tidy. Ideal for kitchen storage and a great gift choice.
【Multi-Functional Design】Suitable for refrigeration and freezing. Ideal for storing dry goods and liquids, such as grains, candies, fruits, pickles, milk and smoothies. Wide application.










