Inline skating is a multi-disciplinary sport and can refer to a number
of activities practiced using inline skates. Inline skates typically
have two to five polyurethane wheels depending on the style of practice,
arranged in a single line by a metal or plastic frame on the underside
of a boot. The in-line design allows for greater speed and
maneuverability than traditional (or "quad") roller skates. Following
this basic design principle, inline skates can be modified to varying
degrees to accommodate niche disciplines.
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