These a pretty but they don’t stretch well even enough to attach the lid. They are kind of a brittle plastic. I worked so hard removing the lid that I dropped it. Thank goodness this was without food in it. I was hoping for better because I love the colors and style. But even worse, they’re not airtight. I’ve tried turning the closure in every position, but every time I squeeze, I hear air pumping in and out.  At this price I expected much better. I’m f these are ever improved to eliminate these flaws, I’d be happy to buy them.