BPA FREE & FOOD SAFE: Each mason jar is crafted from high quality thick glass and corrosion resistant lids. Heat-tempered durability for water bath canning, microwave and dishwasher safe.

【18 Pcs, 6 Different Sizes】: You'll get more than others 18 pcs silicone lids. The silicone stretch lids come in 6 sizes (2.5", 3.7", 4.5", 5.5", 6.3", 8.0" diameter). They can expand to fit most bowls, pots, containers, mugs, cups, cans, jars. Never waste time transferring foods to other containers.