Awesome ergonomic chair, in excellent shape. Wiggles enough to constantly activate your core, and keep your posture appropriate.
The pneumatic piston is excellent: it holds firmly at any available altitude.
Not completely backless (those can feel weird -- your back has no point of reference!), but with a sort of demi-back. Just enough so your back knows it’s following the conversation, and that you’re not about to slide off ingloriously toward a lawsuit. Maybe you work from home, and have no one to sue.
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