These pants are thin and silky soft, and extremely comfortable.  My oldest son is very touch sensitive and has always been touchy with clothes, so he won't wear anything that is remotely uncomfortable.  He's not worn pajama pants since he was little and I bought these on the extremely remote chance he would wear them.  He LOVES them, and thanked me twice for buying them.  He tends to be hot as well, but has not complained about these making him hot.  We'll definitely be buying him some more.