PREMIUM QUALITY and DURABLE: These Home brewing Bottles are made from sturdy, transparent glass to reduce the risk of breakage for long-lasting use. Can be placed in the refrigerator to keep your beverages cold. PERFECT FOR HOMEMADE BEVERAGES: Coming in a 8.5 oz size, these brewing bottles are the perfect accessories for homemade vanilla extract, limoncello, beer, kombucha, salad dressing, juice, flavored cooking oil water, vinegar, cider, herbal extract and much more. AIRTIGHT AND LEAK-PROOF TOP: These brewing bottles are thoughtfully fitted with a stainless steel swing top and silicon gasket to lock in freshness and flavor. The airtight gaskets ensure your drinks stay fresh and carbonated. Can be easily opened and reclosed for repeated use.