Unlock home fermentation with robust swing top glass bottles! Crafted by brewing specialists, this 8-pack of 8.5oz glass bottles combines reinforced durability with reliable functionality. Ideal for carbonating kombucha, lively kefir, or small-batch infusions – designed to contain pressure securely. High-performance Flip Top Fermentation Bottles Reinforced 3mm glass walls resist impacts & thermal shocks (-68°F~212°F) - suitable for brewing and dishwasher cycles! Stainless steel clasps resist corrosion while premium polypropylene caps resist wear. Product Includes 8 pack 8.5oz / 250ml swing top glass bottles with airtight cap lids, 8 * replacement silicone seal caps- BPA free, 15 * black water-proof label - mark the name, 2 * food-grade silicone funnel - fill liquid easily, 2 * bottle pourer - help pour out liquid easily, 1 * white pen. Durable Glass Fermentation Bottles Constructed with commercial-grade 3mm thick walls to safely hold carbonation from kombucha or homemade beverages. Pressure-tested to 6 ATM - brew confidently with minimized leakage concerns. Specifications： ✅ Capacity: 8.5 oz ✅ Size: 8"H x 2.3"W Inch ✅ Bpa-free & Lead-free ✅ Material: Borosilicate Glass ✅ Temperature Range: -68°F~212°F ✅ Package Include: 8 * swing top glass bottles with airtight cap lids 8 * replacement silicone seal caps- BPA free 15 * black water-proof label - mark the name 2 * food-grade silicone funnel - fill liquid easily 2 * bottle pourer - help pour out liquid easily 1 * white pen ‌ 【Complete Fermentation Set With Lids】 brewing essentials include: Eight crystal-clear 8.5oz bottles with airtight seals, waterproof labels, silicone funnels, pourers, and a white pen. Optimized for fermenting kombucha, infusions, or bottling juices. 【Reinforced Glass Durability】 Engineered with 3mm borosilicate glass, these bottles tolerate kitchen use, thermal transitions (-68°F~212°F), and carbonation pressure. Stainless steel clasps + triple-layer silicone gaskets create a secure barrier—preserving flavors for juices, teas, or homebrews. 【Advanced Leak-Resistant Seals】 Triple-layered silicone gaskets form a tight closure! Maintain carbonation for fizzy kombucha while reducing external exposure - contents stay fresh for extended periods. 【Precision Pouring Design】 Narrow-neck construction enables controlled pouring of dressings, milk, or brews - reduced drips. Wide base enhances stability during use. 【Reusable Eco-Design】 Reduce plastic waste! Dishwasher-safe reusable bottles feature corrosion-resistant steel closures. Perfect as daily containers or fermentation vessels - sustainable and functional.