Mason Jars Set: Each set includes 16- 4 oz mason jars, 16 canning lids, 1 chalk marker, 42 black chalkboard labels (to use with included chalk marker) High Quality: Canning jar is make of high quality thick glass and corrosion resistant lids. Jars smooth touch and high transparency, lid is lined with BPA-free plastisol for airtight and leakproof Long Lasting Freshness: Small jelly jar lid is desighed with screw-in and the band is made of time-tested sealing compound. Airtight and leakproof perfection, that keeps food fresh Use Repeatedly: Most foods may be refrigerated for 3 weeks, or stored away with for up to 12 months, fermenting food may be sealed for up to 18 months. With our erasable labels, can keep reusing them for different things all the time Widely Use: Glass jars are perfect for fermenting, canning, and pickling. Use these to hold your overnight oats, baby food, honey, seasoning, canning, and also DIY decoration jars for a shower, birthday or wedding, teacher gifts, in a gift basket etc