Safety First: BPA free glass bottles with airtight seal; Durable stainless steel closures and high-pressure gaskets create leakproof barrier for kombucha bottles 16 oz; Pressure safe glass bottles perfect for carbonation | Versatile Usage: Ideal swing top bottles 16oz for kombucha, beer brewing, water kefir, homemade soda; These flip top glass bottles maintain freshness; Perfect bottles with stoppers for fermenting, canning, or storing extracts | Complete Package: Each set includes six 16 oz swing top glass bottles; Comes with marker, labels, and six extra gaskets; Essential addition to any brewing bottles collection; free lifetime seal replacement if it wears out | Easy Maintenance: Dishwasher safe glass bottles with lids; Reusable flip top bottles 16 oz designed for convenience; Sealable bottles clean effortlessly; Grolsch bottles style with superior airtight performance for all liquids | Lifetime Seal Replacement – If the swing-top seal ever wears out, we’ll replace it free for life. Simply contact us through Amazon. | Secure Delivery: Double bubble wrapped with dividers in protective box; Ensures safe arrival of your swingtop glass bottles; These pressure safe flip top bottles withstand transport; Clear beer bottles ready for immediate use