Active sitting wobble stool with spring mechanism

This item is an active sitting wobble stool designed to promote core engagement and movement while seated. The physical construction features a round, upholstered cushion in a light green color, likely fabric or microfiber material, providing a cushioned seating surface. Below the seat is a visible exposed vertical metal spring painted in a matching green hue, which allows for vertical bounce and flexible tilting in various directions. The base consists of a dark grey or black curved C-shaped or horseshoe-shaped molded plastic platform that provides stabilization while still permitting dynamic motion. There are no clearly readable maker's marks, brand names, or tags visible in the photograph, though the design is consistent with modern ergonomic active seating furniture often used in offices or classrooms to encourage dynamic posture. The condition appears generally good with minor surface dust, typical of an item sitting on a retail or warehouse floor. The item relies purely on its visual structural characteristics for identification as no text or signature is present.

Based on what I can see in the photograph, this active sitting wobble stool features a light green upholstered cushion, an exposed vertical metal spring, and a dark curved molded plastic base. The design is visually consistent with modern ergonomic active seating commonly used in educational and office environments to encourage dynamic posture. However, I can't verify from a photo whether the materials or internal spring mechanism meet specific commercial-grade durability standards, and there are no clearly readable maker's marks or brand tags visible to link this to a specific manufacturer. A physical inspection would be needed to confirm the build quality and structural integrity. My appraisal estimate of $75 to $150 reflects the typical retail and secondary market behavior for generic or unbranded ergonomic active seating of this type in good, lightly used condition. Demand for flexible classroom and office seating remains steady, supporting this range. Because no brand is definitively identified, if this item turns out to be a generic replica or unbranded import rather than a name-brand ergonomic model, the value would likely sit at the lower end of the range, around $40 to $75. To establish a more precise market value, an in-person examination by an office furniture specialist and verification of any hidden stamps or labels would be necessary.