Everything is consistent, elastic have not hurt air, but the big problem is the smell, it looks like they stayed at a gas tank (even after washing) yet they were in bags tight and clean. I wanted to use to close boxes, bags etc. containing food products, it's really not possible, and as I do not want the kitchen feel the smell of a garage, I will try to use it to the cellar ... saw another comment 5 stars on the same product, maybe this is just my order ...