These wide mouth jar lids are tightly sealed with leak-proof seal and turn jar into a drinking bottle,to storage some dry goods or beverage,cold brew coffee,iced tea,lemonade,milk,salad jar lids with removable silicone gasket provide a secure seal to leak proof,easy to use,simply screw the lid on jar and then press flip cap hard for leak-proof.The airtight seal keeps your food The wide mouth jar flip cap lids are tightly screwed on jars,will never fall off while you are pouring,suitable for ball jars and other wide mouth jars,but not fit regular mouth jars food-grade plastic and silicone material, ,leak proof,flip cap fashion design,dishwasher safe, jar pouring lid with a hole for easy to carry and hanging on kitchen,bike,backpack,. Canning lids use with wide mouth jars to take some food or storage food like beans and oatmeal in your pantry,flip cap good for pouring liquid and used with straw to drinking lemonade,milk,yogurt Airtight Sealed This lid provides and air tight, dependable seal to keep your foods and that it will never leak. Flip Cap Design with a Ring Our flip cap is sturdily attached and will never fall off. The ring on the top are made for easy take out or hanging on kitchen, bike, etc. Size: 86mm Colour:black Material:PP Package Contents: 4 x Jar Lids(Does not contain bottles)