Top features:- Tension control lets you lock the chair in multiple positions - Soft-feel leather lets you sit in comfort Tension control The Alphason Bentley AOC6355-L-BLK Leather Tilting Executive Chair has a multi-set, full synchro mechanism with tension control. This allows you to lock the seat in multiple positions, depending on your preference. The height can also be adjusted, ensuring that you can find your ideal position.Soft-feel leatherMade from soft-feel leather, the chair has generous padding to ensure that you enjoy a comfortable experience whether you are working or playing.