skater
Athlete who does in-line skating; because of the risk of injury from falling, the athlete usually wears several pieces of protective equipment.
elbow pad 
Padded piece of equipment designed to protect the elbow.
knee pad 
Piece of equipment made of hard molded plastic that protects the knee.
wrist guard 
Piece of equipment with a hard plastic structure that protects the hand and the wrist.
helmet 
Hard piece of equipment designed to protect the head.