These tights live up to their name. They last longer than any other brand we have tried. My 10-year-old is tall for her age (around 4 foot 11) and wears a size 12 in pants. The large fits her perfectly.
I have 2 daughters in ballet now...a five-year old and a 2-year old. I have only ever bought this brand and style of tights, and I have no intent of buying a different brand at the moment because these tights have been fantastic. In fact, two of the pairs are now "hand-me-downs" to my younger daughter after being used by my older daughter for 2.5 years, and they are still run-free. I'll admit that the pink color is a little faded after all those washings (I just throw them in the washer and sometimes the dryer, even though I know I probably shouldn't), but they are still holding together nicely. Both of my girls are tall and thin, so I actually order a size larger for them just so they are long enough, and it works out perfectly.
These tights are good quality, good color, accurate fit and don't easily run. But I don't recommend them for petite children. The ankle openings are wide which causes them to ride up on petite girls. The best footless tights for petite girls are the Capezio Hold and Stretch footless.