Footwear with wheels under their soles, designed to simulate ice skating on any hard, smooth, and/or flat surface in any weather or climate. 

There are two types: 

* "quads" or those with wheels arranged like those under a car; and 
* "[[inline skates]]" or those with wheels arranged in a straight line. 

h4. See also

* [[roller shoes]]
ローラースケート 轮滑鞋