【High Quality Glass】The large mason jars are made of BPA free, toxic-free, lead free glass to ensure food grade safe and the high visibility allowing you to see what’s inside jars with airtight lids. Besides, full wide mouth design makes it easy to fill up, empty and clean to make sure safe for refrigerator and dishwasher.【Airtight seal & Leakproof】Silver split-type lids for mason jars 16 oz made of food safe metal screw band are corrosion-resistant with aright ceiling compound to ensure leakproof that keep air and excessive moisture out, prolong the shelf-life of contents inside and lock in nutrients, freshness and flavor without any worry of spills.【Canning Food & Prep meals】 16 oz mason jars are suitable for fermenting, canning pickles, peppers, jams, jellies, ketchup, spices, honey, salad fruits, yogurt, oats, snacks, parfaits, smoothies, candies, nuts, biscuits. It can also be used to fill bath salt, body butter, buttons, beads, lotions, essential oils etc for life and work or on the go.【Multifunction for Decorations & DIY】 The quart mason jars can be used for homemade candles, wedding and party favors, flowers. Moreover, you can paint and decorate the classic overnight oats jars with lid whenever you want and use them to create DIY arts and crafts for home decoration.【100% Satisfaciton Guarantee】We always have the idea of environment. Sometimes, accidents may happen during the shipping of little jars. If canning jars are cracked or broken, please feel free to contact us then we will reply to you within 6 hours to make sure you are 100% satisfied with our product and service.