Key facts

ONGO® Classic
ONGO® Classic
Eberhard Lenz >
Architonic ID:
Manufacturer groups :
Seating-Stools >
Office chairs-Swivel stools >
Seating-Stools >
Office chairs-Swivel stools >

Product variants


ONGO® Classic – active sitting with feedback

Much of modern life takes place in a seated position – although the human body is designed for movement. The ONGO® Classic strikes a balance between these apparently conflicting needs. Naturally, you can sit on it. But you can also move on it: The curved base responds to any shift in weight, activating the body’s musculature. The ball track built into the foot of the ONGO® Classic gives acoustic feedback on every movement.

It’s time to say goodbye to unhealthy habits of sitting still: When you hear the ball humming along the track, you know you’re moving in the right direction. The ball track’s feedback function makes the ergonomically designed stool an innovative piece of fitness equipment.

When you master the ball’s motion, you will relieve tension and
strengthen your muscles – all while simply sitting.

The ONGO® Classic does your body good. And it looks good, too. Its innovative features and timeless design mean that the ONGO® Classic is perfectly placed anywhere: at home, at the office, in medical offices, studios, and public spaces. Wherever you want to sit more actively and enhance your health – and have fun at the same time!

Choose your ONGO® Classic from the following options according to your individual wishes: body in black or white, ball track in black, white or silver, seat cover in 12 colors.

The height is easy to adjust with a high-quality gas spring.

The tall ONGO® Classic is designed for the growing number of desks with adjustable heights because it "grows" easily with them.

Covers for the seat:
- knit microfiber (97% polyester and 3% spanex)
- Skai® nature Base (approx. 80% renewable raw materials)
- Skai® leather (fine calf leather)
- leather (durable cowhide)

Seat Ø 35.5 cm (14 in.)
Height adjusts from 42 to 64 cm (regular) or from 55 to 77 cm (tall)
Base Ø 42 cm (16.5 in.)
Lightweight (< 6 kg or about 13 lbs)