" Mine are air tight. I gave it the water test and had no leaks. I love them. I contacted customer service to see if I could get extra lids. The Product Hatchery has the best customer service. I'd never hesitate to do business with them again. I buy sugar and flour in larger sizes and these will be perfect for my flour and sugar. I love them. The jars came double boxed and had no issues with damage during shipping plus they arrived 2 days after I ordered them."