-2 speed balls with 90° rebound springs for agility and accuracy training -360° rotating spinning bar and durable boxing bag for coordination practice -6-level adjustable height meets different needs of the whole family -High-quality and multi-layer materials for a longer service time -Double bearing system ensures better sturdiness and lower noise -Unique suspension system with 4-wheel driving spring for higher durability -Widened base with premium suction cups contribute to overall stability