Office Chair Glossary of Terms

A specialized seat designed for use at a desk, typically featuring adjustable height and a swivel base. It provides essential support for long hours of computer work or studying.

A chair with a single central leg or base that allows the seat to rotate 360 degrees. This design lets you easily reach different areas of your workspace without straining your back.

An add-on pad made from viscoelastic foam that contours to your body shape to relieve pressure on the tailbone and hips. It is an excellent upgrade for firm or aging office chairs.

A cushioned attachment designed to fill the gap between your lower back and the chair backrest. It helps maintain the natural curve of your spine and prevents lower back pain during extended sitting.

Replacement rolling wheels that attach to the base of your chair, allowing for smooth movement across floors. Upgrading to soft polyurethane casters can protect hardwood floors from scratches.

A high-back, heavily padded office chair upholstered in genuine or faux leather for a premium look. These chairs often feature plush cushioning and a commanding presence suited for managerial offices.

The pneumatic mechanism located beneath the seat that allows you to easily adjust the chair's height with a lever. Replacing a worn-out cylinder is a cost-effective way to fix a sinking chair.

An adjustable attachment at the top of the chair back designed to support the cervical spine and head. It reduces neck strain, especially when reclining or taking short breaks at your desk.

A durable, lightweight synthetic polymer frequently used for office chair bases, mesh backrests, and caster wheels. It offers excellent tensile strength and resistance to daily wear and tear.

A lightweight, rust-resistant metal often used for premium office chair bases and armrest frames. Polished aluminum provides a sleek, modern aesthetic while maintaining high structural integrity.

A strong, heavy-duty metal commonly utilized in the internal frames, gas lift cylinders, and heavy-duty bases of office chairs. It ensures long-lasting stability and high weight capacity for the user.

A versatile, cost-effective material widely used for chair armrests, basic caster wheels, and adjustment levers. High-quality molded plastics provide ergonomic shaping while keeping the overall chair weight manageable.

The applied science of designing furniture to fit the human body's natural posture and movements. An ergonomic office chair minimizes physical stress and reduces the risk of musculoskeletal disorders during long work sessions.

A design feature or adjustable pad that pushes gently against the lower back to maintain the spine's natural inward curve. Proper lumbar support is crucial for preventing slouching and lower back fatigue.

An advanced reclining system where the backrest and seat pan tilt at a synchronized ratio, typically 2:1. This keeps your feet flat on the floor and maintains a healthy hip angle while leaning back.

A tightly woven, flexible fabric used for chair backrests and seats to promote continuous air circulation. It prevents heat and moisture buildup, keeping the user cool during extended periods of sitting.

The maximum safe load limit that an office chair's frame, base, and gas cylinder can support without structural failure. Buyers should always check this specification to ensure long-term durability and safety.

A sliding mechanism that allows the user to move the seat pan forward or backward to accommodate different leg lengths. Proper adjustment ensures there is a small gap between the seat edge and the back of your knees to promote circulation.