EXCELLENT SEALING-NO LEAKAGECanning lids sealing ring made of food--grade eco-friendly silicone. Super sealing has High temperature resistance performance ensures airtightness and prevents leakage providing a hassle-free storage solution. SAFE and RELIABLEMason Jar lids is lined with high-quality food-grade BPA-Free Silicone tight seals ensure there are no harmful materials being introduced to your storage items. UNIVERSAL SIZEWide mouth canning lids. Each reusable leak proof storage solid cap is approx3.39 inches/ 86mm in diameter, which can be compatible with wide mouth mason jar . Packing included: 150 x Large mouth canning lids in a box(without canning band/ring). PERSONALITY FEATURESWe provide a DIY area on the mason jar lids. You can write the date or name directly on the lid surface with a permanent marker so you can easily identify the contents of the jar. Versatile Leak-proof lids-You can jar to store homemade pickles, jams, jellies, preserves, tomato sauces, salsa, broths, screws or other objects, and you do make some cream pies or directly DIY the lids to be a adornment. Regularly share the fresh delicacy or happiness with family & friends. RISK-FREE PURCHASE SERVICEIf you receive a damaged product or have any other dissatisfaction, contact us and we will do our best to offer a satisfactory solution for you within 24 hours.