I've read reviews that they come with silicone O-rings for extra sealing. However, I use my shake glasses and without the use of rings they do NOT leak AT ALL. Even if I turn them upside down and then leave them upside down. I marinate food and make cocktails. The caps are well made and just as strong as the Ball brand. Unfortunately, Ball only makes dark gray caps. But these white lids allow you to get creative with your gifts. I've never had any problems with a leak or other issues. I'm so happy with it that I'm buying another bag. I highly recommend this product.
Mason Jar Lids With Straw Hole, Bamboo Lids For Beer Can Glass, CNVOILA ECO Reusable Bamboo Mason Jar Lids For Regular Mouth Mason Jar With 2 Reusable Stainless Steel Straw
36 Review
SENSARTE Nonstick Griddle Grill Pan Set - Reversible Cast Aluminum Griddle, Perfect For Indoor Stovetop Or Outdoor BBQs - 2 Burner Griddle, Portable And Convenient - 19.5" X 10.7" X 2, Gray
31 Review
Nonstick Frying Pan Skillet With Swiss Granite Coating And Lid, Healthy Cookware Chef'S Pan With Glass Cover, PFOA Free (11 Inches)
42 Review
Amazon Basics Enameled Cast Iron Covered Dutch Oven, 7.3-Quart, Red
36 Review
GOBAM Wood Rolling Pin: The Perfect Dough Roller For Baking Cookies, Pie, Pizza & More - 13 X 1.38 Inches
35 Review
2-Pack European Grade Silicone Bunte Cake Pan Set - Non Stick Bakeware Fluted Tube Mold For Jello, Gelatin & Cakes | 9 Inch Baking Pans | Aokinle | BPA Free
38 Review
4 Pack 12 Inch Stainless Steel Round Pizza Baking Pan Tray Crisper Sheet Oven Cooking Healthy For Pizzas - Deedro
47 Review
100-Pack Of Disposable 18-Inch Piping Bags For Cake, Cupcake, And Cookie Decorating - Perfect For Icing And Frosting!
41 Review