Inlineskates
Inline skates are a type of roller skates in which the wheels are mounted in a single line along the bottom of the boot. This design contrasts with quad skates, which have two pairs of wheels arranged in two diagonals. A typical inline skate comprises a rigid boot, a frame, wheels attached to the frame, bearings in each wheel, and a braking system that varies by model.
Variants include recreational or fitness skates for general skating, aggressive skates designed for tricks in urban
History: The concept of inline skating has earlier origins, but modern inline skates became widely popular
Use and safety: Skating requires protective equipment such as a helmet, wrist guards, knee pads, and elbow