SportShiny Pro Balance Ball Chair–Exercise Stability Yoga Ball Ergonomic Chair for Office& Home Desk with Stability Ring,Slipcover&Air Pump,Improve Balance,Core Strength&Posture,Relieve Back Pain Price: $39.99 (as of 04/17/2021 18:16 PST- Details) & FREE Shipping.

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Alternative Desk Chair – It’s time to ditch those clumsy and boring ordinary office chairs that make your back sore and painful after sitting for long periods, meet this brand new active flexible air seat recommended by fitness experts and physical therapists to relieves fatigue and promotes proper posture
Improve Focus and Stay Active – Mind keeps concentrated, body free to mobilize, compared with traditional office chairs, the revolutionary difference with ProBalance is you can sit comfortably to focus on the task at hand while your core and leg muscles are still fully engaged, which in turn leading to higher energy levels and increased productivity