Ergonomic Mid-Back Mesh Office Chair – Lumbar Support, Fixed Armrests, 250 lb Capacity, Grey

Ergonomic Mid-Back Mesh Office Chair – Lumbar Support, Fixed Armrests, 250 lb Capacity (Grey)

A mid-back office chair with a breathable mesh backrest, contoured lumbar support, and pneumatic seat height adjustment. Built for extended desk use with a 90–120° rocking/recline mechanism and stable fixed armrests. Available in Grey.

Key Benefits

• Contoured lumbar support reduces lower back strain during long sitting sessions – The mid-back design follows the natural inward curve of the lumbar spine. Maintaining this curve while seated reduces the tendency to slouch forward, which is a primary cause of lower back fatigue and discomfort during extended desk work. The support is built into the backrest structure rather than added as a separate adjustable component.
• Breathable mesh back prevents heat and moisture buildup – The open mesh structure allows continuous air circulation behind your back throughout the day. Unlike solid foam or upholstered backrests that trap heat, the mesh keeps the contact surface ventilated, reducing sweat accumulation during long work sessions.
• High-resilience foam seat maintains its shape under daily use – The seat cushion uses high-resilience foam, which is denser than standard polyurethane foam and resists the gradual compression that causes cheaper chairs to flatten and lose support over months of use. The cushion stays firm enough to support proper seated posture without bottoming out.
• 90–120° recline with adjustable tension knob allows controlled posture changes – Holding a fixed seated posture for extended periods increases cumulative spinal load. The recline mechanism lets you shift weight backward and decompress the spine periodically, while the tension knob allows you to calibrate recline resistance to your body weight so the chair responds predictably.
• Fixed armrests provide consistent, stable arm support – Unlike flip or height-adjustable armrests, fixed armrests stay in a set position, which provides a reliable resting surface for the forearms during typing or mouse use. This suits users who prefer a consistent reference point for arm placement rather than adjustable positioning.
• BIFMA-certified gas lift ensures safe, reliable height adjustment – The pneumatic gas cylinder meets BIFMA (Business and Institutional Furniture Manufacturers Association) certification standards, which include load capacity, durability, and safety testing under repeated use cycles. The seat height adjusts from 16.7" to 19.7" to accommodate a range of desk heights and body types.
• 360° silent swivel casters protect hard floor surfaces – The casters are designed to roll quietly without scratching hardwood or tile floors, unlike standard hard plastic casters that can leave marks or produce noise on hard surfaces. The 360° swivel allows free movement in any direction without repositioning the chair.
• Rear storage pocket keeps the workspace clear – A built-in pocket on the back of the chair holds books, tablets, documents, or small items within reach without requiring a separate desk organizer or side table.

Specifications

• Color: Grey
• Armrest type: Fixed
• Seat height range: 16.7–19.7 inches
• Recline range: 90–120 degrees
• Weight capacity: 250 lbs
• Assembled dimensions: 22.24" L × 21.46" W × 38.19" H
• Product weight: 21.61 lbs (9.8 kg)
• Package dimensions: 21.65" × 9.84" × 18.11"
• Package weight: 25.35 lbs
• Item No.: ZHUMI-C-5512CZ-GY

Package Contents

• 1 × Mid-Back Office Chair (assembly required)