Chiro Medium Back Task Operator Office Chair

Sitting at a desk for hours shouldn't mean compromising on physical health. The Chiro Medium Back Task Operator Office Chair offers a compact yet exceptionally supportive seating solution designed to prevent slouching, improve alignment, and alleviate desk-induced backaches.

Endorsed by a UK Chiropractic Doctor, this high-performance ergonomic chair delivers all the heavy-duty features of a specialist posture chair but in a mid-back profile. It is the perfect choice for computer users, home offices, and intensive 24-hour multi-shift environments looking for uncompromised orthopaedic support without the bulk of a tall headrest.

Key Features & Ergonomic Benefits

Chiropractor Endorsed Design: Specifically sculpted in partnership with posture experts to actively reduce muscle fatigue and encourage healthy spine alignment.
Built-In Inflatable Lumbar Support: Features an interactive manual air pump that allows you to adjust the firmness of the lower back support to match your exact comfort level.
4-Lever Independent Mechanism: Total, bespoke control over your sitting posture. Change your seat height, backrest tilt, seat angle (forward tilt), and seat depth completely independently of each other.
Certified for 24-Hour Intensive Use: Built with commercial-grade components designed to withstand continuous, round-the-clock wear. Tested to support a maximum weight capacity of up to 150kg (23.5 Stone).
Ergonomic Waterfall Seat: The contoured foam seat pad features a tapered front edge. This reduces pressure on the underside of your thighs, stimulating better circulation during long typing sessions.
Mid-Back Agility: The medium backrest features an easy-to-use ratchet height adjustment system, ensuring the thoracic and lumbar support sits perfectly against your frame.

Technical Specifications

Feature	Specification
Daily Usage Rating	24 Hours (Intensive / Multi-shift)
Weight Capacity	150 kg / 23.5 Stone
Backrest Style	Medium Back with Ratchet Height Adjustment
Mechanism Type	Independent 4-Lever with Free-Float Option
Seat Dimensions	Width: 510mm \| Depth: 480mm–540mm (with Seat Slide)
Seat Height Range	500mm – 600mm
Backrest Dimensions	Width: 460mm \| Height: 500mm–550mm
Compliance & Testing	Tested to BS 5459-2 standards for structural integrity
Warranty	2-Year Mechanical Component Guarantee

Frequently Asked Questions

What is the difference between the Chiro Medium Back and High Back office chairs?

The primary difference is the height of the backrest. The Chiro Medium Back chair offers a more compact profile (500mm–550mm height), making it ideal for smaller workspaces or users who prefer greater upper-body mobility while typing, whereas the High Back variant offers full thoracic coverage. Both models feature identical ergonomic adjustments and inflatable lumbar support.

Is the Chiro Medium Back chair suitable for 24/7 call centres?

Yes, completely. This chair is fully certified to BS 5459-2 standards, meaning it is rated for severe 24-hour commercial use. Its heavy-duty gas strut, chrome 5-star base, and premium contoured foam ensure it holds up to continuous multi-shift operations.

How does the independent 4-lever mechanism help my posture?

The 4-lever mechanism allows you to fine-tune every angle of the chair. You can tilt the seat forward slightly to open up your hips, change the angle of the backrest to take pressure off your lumbar spine, and lock the chair into a fixed position or leave it in 'free-float' mode to encourage active sitting.