Eurotech Seating MFSY77 is an ergonomic office chair designed for comfort and productivity. With its pneumatic seat height adjustment, you can easily find the perfect position for your work. The tilt tension micro-adjustment knob allows you to customize the chair's resistance to reclining, providing personalized support. The backrest locking control knob lets you lock the backrest in place or unlock it for a more relaxed posture. The seat slide control lever allows you to adjust the depth of the seat for optimal leg support.