These recreational devices consist of boots or shoes mounted on a chassis with four wheels, arranged in two pairs, at the front and rear. Designed specifically to accommodate the anatomical and biomechanical... Read more »
These recreational footwear items feature four wheels arranged in a two-by-two configuration, often utilized for skating rinks, outdoor paths, or recreational activities. Designed for stability and ease of use, these products typically... Read more »
A figure skating jump involving four rotations in the air, landed on one foot, represents a significant achievement in the sport. For example, a skater might execute a quad toe loop, rotating... Read more »