Salli Swing has a swing mechanism that enables the seat to be tilted into every direction without a separate adjustment lever. The mechanism makes it possible for the user to exercise while sitting, which adds to the mobility and metabolism of the lower back, and activates the whole body. Only available on a Twin seat, cannot be added to an existing saddle chair A1 or A2 quality leather or artificial leather, see colour chart Hand controlled height adjustment with gas spring Gas spring chrome or black Weight 10.2 kg Warranty 10 years