Roller Skates

Roller skates are a type of footwear that have wheels attached to the shoe. The normal definition of a roller skate has a wheel configuration of 2x2, two wheels on the toe and two on the heel. The two sets of wheels are attached to the boot by a truck.

Another definition of a roller skate is an inline skate. However, an inline skate has a wheel configuration of 4x1 (four wheels in a single line). Inline skates a commonly used in Roller Hockey.