I bought these for a Halloween costume but was impressed with the quality when they arrived.  It is a little difficult to tell in the picture, but these are ribbed.  They stretch out pretty well, and can be worn all the way up the arms if you don't want to scrunch them down.  They added some warmth during my Halloween evening, but I wouldn't rely on them when it is very cold outside.  Overall they were a little more expensive than I think they are worth, but they were true to what I was expecting.