The full system comprises three pieces: 91cm wooden rail connected to a steel frame, which fits snugly into the bottom mat. Velcro flaps ensure a secure hold. While the sloping top mat features additional Velcro folded stability.With a 91cmx122cm footprint (bar extends another 20cm). Athlete beginner use it to practice skills such as squats and tap swing shaping. Advanced athletes use it for giant swing shaping, Tkatchev and more.