Your workout deserves an upgrade. The SPRI Balance Trainer Pro is a commercial-grade half exercise ball that is flat on one side and domed on the other. Ideal for cardio, agility, strength, core, balance, and mobility exercises and drills, this fitness tool helps you tone and strengthen while also improving flexibility. The 65cm diameter ball features easy-to-grip handles and a non-skid base so you can focus on enhancing your movement capabilities, training your balance, and building strength.