As you can see, the tights were boxed and placed in the same plastic bag. I tried arranging them so you can see my stack was about the same length. I've seen reviews that say their batches were different lengths. It seems to me that these could be thick tights (good for late autumn or winter). I don't remember seeing any clues. The only downside I noticed was the crotch lines that run down the back of the tights. However, I think this was because they ran out of fabric/roll and added another roll to continue. My princess hasn't worn them yet because I have to wash them before she wears them, so I can't tell if the tights leave marks (because the seams behind the patterns are too tight) or if the seams are behind the patterns. .. leave traces on the skin. Based on what I said I like them and I think the tights will stand up to what my 5 year old will do while wearing them.