Ergonomic office chair ActiveJet YK848 — mesh seat and backrest, black, backrest 50.5×57 cm, seat width 48.5 cm

ActiveJet YK848 is a modern ergonomic office chair in black with a mesh backrest and textile-upholstered seat. The chair is designed for everyday use at home or in the office and features a wide seat (48.5 × 52 cm) and a tall mesh backrest (50.5 × 57 cm) that provides full support for the back. Built-in adjustable elements such as a height-adjustable headrest, 6D armrests and a multi-function mechanism allow the chair to be adapted to different body shapes and work positions. The breathable materials and foam-padded seat ensure comfort during prolonged use.

Advantages

The chair combines ergonomic contours with a supportive three-part lumbar section and a full-length adjustable headrest to promote correct posture and reduce strain during long working sessions. 6D armrests offer extensive adjustability (height, depth, rotation and lateral position) to relieve pressure on arms and shoulders. The breathable mesh backrest and textile-covered seat with quality foam improve air circulation and sitting comfort. Additional features include a pull-out padded footrest, recline up to 155°, 360° swivel and a five-star steel base with casters for smooth movement.

Suitable for

• Office workers who sit for extended periods
• Remote workers and home office setups
• Students and people studying for long sessions
• Users who need adjustable support for spine, neck and arms

Key specifications

• Seat width: 48.5 × 52 cm
• Backrest dimensions: 50.5 × 57 cm (mesh)
• Adjustable headrest: height +6 cm, rotation up to 38°
• 6D armrests: height adjustment 7.5 cm, forward/back 5 cm, rotation up to 40°
• Recline angle: up to 155°
• Pneumatic gas lift (class 3) and multi-function tilt mechanism
• Pull-out padded footrest
• Five-star steel base with casters, 360° swivel
• Seat upholstery: textile with foam padding; backrest: breathable mesh

How to use

Adjust the seat height with the pneumatic lift so your feet rest flat on the floor and your thighs are roughly parallel to the ground. Use the multi-function mechanism to set the backrest angle that supports your lumbar curve and recline up to 155° when you need a break. Set the headrest height and rotation to support your neck, and position the 6D armrests to align comfortably with your desk height and typing position. Pull out the padded footrest to relax when required.

Usage recommendations

For ergonomic benefits, regularly change posture during long sessions, ensure the lumbar section contacts the lower back, and set armrests so shoulders remain relaxed. For optimal comfort and longevity, avoid exposing the mesh and upholstery to direct sunlight for extended periods and follow basic cleaning instructions for textile and mesh materials.