Mini-bikes; Collapsible bicycles; Electric bicycles; Electrically-powered motor scooters; Motorized bicycles; Mountain bicycles; Push scooters; Push scooters and structural parts therefor; Push scooters for children; Racing bicycles; Self-balancing one-wheeled electric scooters; Self-balancing scooters; Self-balancing two-wheeled electric scooters; Self-balancing unicycles; Self balancing electric scooters