Trider is a leisure sports exercise device which is totally different from the existing kickboard-type equipment with which people must push off the ground for moving forward. Based on new technology, Trider creates self-forward forces just with the movement of opening and closing the legs of the rider. It has three wheels that can be opened and closed. The forward force is created by its directional casters installed on the two rears of the product. Therefore, Trider runs without need for any engine. Its moving principle and ease of riding make it be popular sports exercise device among Korean consumers. Trider has both domestic and international patents.

Trider