Introducing the hedgehock
This is the NOHrD HedgeHock Seat: a gorgeous chair that adapts to you and encourages proper posture. It comes with 49 solid wood blocks that are spring-suspended to allow active sitting. The HedgeHock has four bottom rolls, so you can easily move it around.
More gadgets like this: here
This chair weighs only 40lbs. It has a footprint of 22 x 22 x 22 inches.
[where to get it] [official site]
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