No not rollerskates, they are different than that. They have wheels in the heels which only work when you lean back on the heels.
These got real popular after I was out of school.
I remember thinking how great these would've really come in handy when late for class.
They made such a big deal about kids rolling around and potentially injuring adults that they've been banned in local schools.
dane cook uses these in Employee of the Month - he stole my idea