OverviewBackrests defeat the purpose of strengthening your core as they encourage a postural slump. Height adjustability: It is vital to sit in the correct position for perfect spinal alignment with your hips slightly higher than your legs. The Evolution Chair™ can be adjusted to fit anyone as every chair includes height inserts to accommodate people over 5'8" tall. The two key design features that set the Evolution Chair™ apart from other ball chairs are the absence of a backrest and the ability to adjust the height of your Evolution Chair™.
Evolution Chair Kit - Quality craftsmanship, and the material safety you can trust. The original Evolution Chair Kit includes a high quality height adjustable base (risers included for tall users), anti-burst stability ball, standard casters, and pump.