The main difference between T50 and T50 Air is the seat material.
T50 has a fabric seat cushion with a sponge, whereas T50 Air is a full mesh chair.
The seat pan of T50 Air is made of mesh instead of a sponge.
Lastly, T50 Air doesn't have lumbar support different from T50.
| 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 |