Not just a product - BOSU is known industry-wide for training balance, enhancing flexibility and delivering killer cardio workouts. They have an unprecedented reputation for building strength and fine tuning skills for sports. By itself, the BOSU is just molded plastic, weighted rubber and stability balls with secret filling. You have to engage with them in order to bring them to life! That is when your BOSU offers a system of mindful action, intentional movement and smart science that produces results!