Feature

Description

Backrest

High-back breathable mesh with an S-shaped curve for spinal alignment.

Lumbar Support

Built-in (often adjustable) support bar to maintain the lower back's natural curve.

Headrest

Adjustable height and tilt angle to support the cervical spine.

Armrests

Fixed or 2D/3D adjustable (depending on the specific version), typically made of durable nylon.

Mechanism

Multi-function tilt mechanism (usually 90° to 125° recline) with tension control and lock.

Seat Material

High-density foam cushion with a breathable mesh cover.

Base & Lift

Heavy-duty nylon or chrome 5-star base with a Class 3 or 4 gas lift for height adjustment.

Weight Capacity

Generally supports up to 250–300 lbs (115–135 kg).