Gaiam Classic Backless Balance Ball Chair, Charcoal

BOOST ENERGY LEVELS: Featuring the same yoga ball as the exercise guide, this chair helps to boost energy levels and increase productivity with an active body and a focused and engaged min. RECOMMENDED USER HEIGHT: Designed for users 5' to 5'11"" tall and fits most standard-height desks. For a taller chair, add 2 inches with Gaiam's compatible leg extenders, sold separately. 300-pound weight capacity.. INCLUDES: Removable 52-centimeter charcoal exercise ball, an air pump, an adjustable metal support bar, 4 easy-glide casters (2 back wheels lockable), and a desktop exercise guide to stay active. INFLATION INSTRUCTIONS: It may be necessary to re-inflate the ball after initial inflation to allow the ball’s material to stretch to its final size. Inflate ball with air, let stand for 24 hours, deflate 50% then fill again to 52cm height.