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ONGOClassic - the ergonomic stool

Sit yet move. The ONGO®Classic beautifully combines these somewhat contradictory ideas oder conditions thanks to a curved bottom that reacts to any shift in weight, activating muscles and blood circulation. A rotating ball in the foot of the stool gives discreet, acoustic feedback whenever the angle changes. The seat cover, body and base of the ONGO®Classic are available in many colors and materials, so it stands out everywhere: at a desk or in teamwork, in the office or at home. Both the ONGO®Classic, ‘regular’ version and the ONGO®Classic ‘tall’ version, which can be extended to a standing stool, can be carried easily to wherever you need it, thanks to its light body and 360° grip groove under the seat.


  • Sophisticated design and high-quality craftsmanship.
  • Versatility, with different colors available for the seat cover, body and ball track.
  • High-quality pneumatic seat height adjustment with anscrewing protection.
  • Easy to move: lightweight, with a groove around seat for carrying.


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ONGOClassic in regular or tall

The ONGO®Classic is available in two different seat heights:

  • ONGO®Classic regular, adjustable height between 46 and 66 cm
  • ONGO®Classic tall, adjustable height between 55 and 78 cm.

The regular ONGO®Classic is suitable for standard table heights. The height can be adjusted to your ideal seat height. To ensure optimum blood circulation, your legs should form a slightly open angle (slightly greater than 90 degrees) in relation to your upper body.

The tall ONGO®Classic is designed for the growing number of desks with adjustable heights because it “grows” easily with them. When used as a tall stool, your legs should create a 135 degree angle in relation to the upper body for optimal circulation. The beauty is that you can use it at a tall desk or conference table or at the bar in the kitchen as a tall stool or as a shorter one in its low position.

Product data

There are two versions of the ONGO®Classic

  • regular: seat height 46–66 cm
  • tall: seat height 55-78 cm
  • seat surface (diameter) 39 cm
  • foot (diameter) 42 cm
  • weight approx. 5.7 kg
  • made in Germany
  • design, material and assembly guarantee consistent quality and long life
  • three year warranty on all original parts

Seat covers

ONGO®Classic is available in seven different seat covers in up to 12 colors each.

  1. Fabric: 95% polyester and 5% spandex, thread according to Oeko Tex 100 color fastness in accordance with automotive standard. Available in 12 colors.
  2. skai® leatherette: High-quality skai® material, long lasting, lightfast, abrasion-resistant. Available in six colors.
  3. skai® nature base: approx. 80% natural and renewable raw materials, environmentally friendly, Oeko-Tex 100 Standard, adheres to the German Medical Devices Act, flame resistant, nonfading, abrasion resistant. Available in four colors.
  4. skai® Dynactiv™ Makari 160: approx. 89% PVC compound and approx. 11% cotton, lightfastness 6, Abrasion cycles 150.000 Martindale, antibacterial, salt water resistant
  5. kvadrat Remix 2: 90% new wool, 10% nylon, gaberdine, lightfast, abrasion-resistant. Available in six colors.
  6. kvadrat Divina Melange 2: 100% new wool, lightfast, abrasion-resistant. Available in six colors.
  7. Leather: fine leather, nonfading, abrasion resistant, tearproof. Available in six colors.