After a herniated my physiotherapist advised to daily training on a balance board and recommended it to me Togu Balance Board. Since the board "break" due to its semi-circle in all directions and can not only rigid tilts forward or backward one is a lot of required. The success will come quickly: after I initially struggled to stand one minute it work now squats etc. Light and it is also easy to store under the bed easily. All in all I am very satisfied with the purchase.