This is a Blue RH Logic 300  Ergonomic  Office Swivel Desk Chair
Fully Adjustable. Seat and Back height adjustable. Seat and back tilt. 
The Chair is missing the lumber air Pump. These can be purchased from around £12 if needed online
This is a top Quality Chair that costs over £800
All functions work as they should. The chairs condition is fully fit for purpose. There are marks on the back and  have old sticker marks all minor but noticeable and seat looks a little faded with minor marks . Well padded seat and back
Overall brilliant Chair that with a good clean would bring this chair to looking great
Please look at my other commercial items
Please note pick up is from Taunton Somerset