What is the difference between T50 and T80?

The tilting mechanisms are different.

The T80 chair’s patented mechanism (US8528973) is co-designed with ITO design studio Germany and engineered by SIDIZ, which makes it possible for the chair to support your back more closely when you tilt the chair.

Also, T80 is a bit bigger than T50.

For more information, please visit the SIDIZ website.

Series	T50	T50 Air	T80
Mesh Backrest	V	V	V
Lumbar Support	V	X	V
Adjustable Arms	V	V	V
Seat	Fabric	Mesh	Fabric
Adjustable Seat	Slide and slope	Slide	Slide and slope
Tilt Type	Multi-limited tilt	Multi-limited tilt	Ultimate sync