I have a 3 year old daughter and I've bought her tights from everywhere I see them for sale.  Cheap, expensive, cotton and every blend in between.  These are the best hands down.  They stay up and hold their shape even when they are a little big and have room to grow.  My daughter goes around in stocking feet a lot inside both at home and preschool and these are the only brand I've bought to date that are still up on her feet when she's running around (others tend to drift).  They are also warm and thick.  I have one in every color they have posted on Amazon so far.  It's a huge relief is that I no longer have to make time to hunt all the stores on my day off and they come straight to my door.  The extra couple of dollars for these tights is worth the avoided expense I would get later if I had bought a cheaper product somewhere else and had to replace them in a couple of weeks.