Cadeira giratória mark adler MA-EXPERT 5.7 — cadeira de escritório ergonómica em rede, altura ajustável, apoio de cabeça, braços, apoio de pés, preta

Ergonomic swivel chair mark adler MA-EXPERT 5.7 with mesh HD fabric seat and mesh backrest designed for prolonged desk work. The chair includes lumbar support, an adjustable headrest and armrests, a retractable footrest and castor wheels. Pneumatic height adjustment provides a seat height range of 51–61 cm and a maximum overall height of 132 cm. Seat dimensions are 49 cm width and 50 cm depth; overall width is 640 mm.

Advantages

The MA-EXPERT 5.7 combines a breathable mesh backrest and mesh HD fabric seat with lumbar support to improve sitting comfort during extended periods. Adjustable headrest, armrests and pneumatic height adjustment allow customization to user height and posture. A soft seat and integrated footrest add additional comfort, while castor wheels enable easy mobility.

Suitable for

• Office and home desk work
• Remote work and study sessions
• Long hours of seated tasks requiring lumbar support

Key specifications

• Seat material: mesh HD fabric
• Backrest type: mesh backrest
• Seat type: soft seat
• Lumbar support: yes
• Adjustable headrest: yes
• Adjustable armrests: yes
• Footrest: yes
• Height adjustment: pneumatic telescope, seat height 51–61 cm
• Overall height (max): 132 cm
• Seat width: 49 cm
• Seat depth: 50 cm
• Overall width: 640 mm
• Castor wheels: yes

How to use

Sit on the chair and adjust the pneumatic height lever to set the seat height within the 51–61 cm range so that your feet rest flat on the floor and knees are approximately at right angles. Adjust the headrest and armrests to support your neck and forearms at a comfortable level. Use the lumbar support and mesh backrest to maintain an upright posture. Pull out the footrest when needed for added leg support and fold it away when not in use. Move the chair on its castor wheels for repositioning.

Recommendations

When changing seat height, keep weight centered to reduce the risk of tipping. Avoid abrupt lateral movements while adjusting height. Regularly check castors and adjustment mechanisms for wear and secure fittings.