EFFECTIVE STRENGTH AND BALANCE TRAINING: The ball cushion trains your strength and balance in any location, activating your muscle strength and coordination skills. MAXIMUM SEATING COMFORT: The smoother side provides maximum seating comfort, while the other provides an additional massage sensation. The hardness of the cushion can be easily adjusted using the supplied air pump. FREE E-BOOK & GUIDE: For effective training with the balance board, you will receive a complete guide and e-book with different training options. Fitness balance cushion Do you spend hours sitting in front of your screen? This balance cushion helps you adopt a correct posture, strengthen your muscles and relieve your spine. It can also be used with a fitness ball to perform many exercises. The balance cushion is a seat that encourages a dynamic posture to tone your muscles. It can also be used as an accessory for certain fitness exercises such as Pilates, which require standing or kneeling. To inflate the cushion and adjust its firmness, all you need is a simple pump. ? Fitness and relaxation cushion ? For a dynamic sitting position ? One side smooth, one side with studs ? Better awareness of your posture ? Can be used at home, in the office or on the go ? Diameter 33 cm ? Please note: air pump not supplied