A studio-grade Wunda chair, built from solid maple. The Timberbalance Chair brings reformer-level resistance training into a compact footprint — a split pedal, four adjustable springs, and a frame milled from solid Canadian maple. In stock and ready to ship. Why it holds up Solid maple frame — not birch. Some chairs at this price use birch and paint over it. Ours is genuine imported Canadian hard maple with Thai rubberwood finger-joint supports, for a frame that resists warping. German piano-wire springs. Four resistance springs, adjustable across multiple levels, so one chair covers rehab-light through advanced strength work. Finished for feel. Every wood edge is polished twice — by machine for precision, by hand for feel. 304 stainless steel screws throughout won't rust into the wood. Fire-retardant PU leather over high-density foam , on a 201 stainless steel upright. Specifications Frame Solid Canadian maple + Thai rubberwood finger-joint; poplar plywood upholstered panels Springs 4 × German piano-wire, multi-level adjustable Upright 201 stainless steel Upholstery Fire-retardant PU leather, high-density foam Dimensions 760 × 600 × 610 mm (29.9 × 23.6 × 24 in) Net