Roller skates

Roller skates are shoes or bindings that fit onto shoes that are worn to enable the wearer to roll along on wheels. The first roller skate was an inline skate design, effectively an ice skate with wheels replacing the blade. Later the "quad skate" style became more popular, consisting of four wheels arranged in the same configuration as a typical car.

Roller skating is a hobby, sport, and mode of transportation using roller skates.