What is a "cross trainer"?

A cross trainer is a type of athletic shoe designed for use in a variety of activities, including gym workouts, aerobics, and cross-training. The shoes typically feature a combination of features from different types of athletic shoes, such as the cushioning and support of running shoes, the stability and traction of tennis shoes, and the flexibility and breathability of basketball shoes. Cross trainers are designed to provide comfort and support during a range of physical activities, and are often used by athletes who participate in multiple sports or activities. They are available in a variety of colors and styles and may feature additional support features such as arch support, heel padding, or a reinforced toe.