Length 60 cm, width 21-22 cm, thickness 20 mm Highly rated & many repeat customers! Because of its width, you can train with a stance similar to that of snowboarding. Ideal for core training in baseball, soccer, basketball, and all kinds of sports. Rather than remaining still, you roll on the pipe, which strengthens your core more effectively. It also improves hip flexibility! For those in apartments, you can place cardboard underneath to soundproof! *It's best to flatten the cardboard until it's thin.*