Great addition to your fitness routines . Yes4All balance board fits with all ages and fitness level. It is a great choice for ones who want to improve their core strength, stability, functionality, and sense of balance for better sport performance. Using balance board can engage and train stabilizing muscles of your back, abdominal, hips, legs and ankles thus help to reduce back pain, improve posture, leg strength and ankle range of motion. Great to use after leg, knee, angle injury and surgery to boost the rehabilitation and reduce the risk of re-injuries. Fitness non-slip plastic balance board(15.75″ Diameter) . High quality board with the non-skid surface prevents slipping or falling out of the board. You can easily stand on the board barefoot, but shoes with anti-slip soles help provide even better grip. When you master all the skills, you can try practicing balance board with your eyes closed. Portable and lightweight board that is easy to take when traveling. Great for commercial rehabilitation centers, gyms, professional athletes and individual use Warning:Yes4All is a registered trademark. If you’re listing a non-yes4all item for sales against the page, you are violating. 1. Amazon listing policy , 2. Fair competition laws , 3. Yes4All trademarks for misleading the use of its logo and name , Yes4All reserves the right seek damages including attorney fees from any such person or business to the fullest extent permitted by law.