Lotto Medium Back Mesh Operator Chair
Sleek contemporary design meets precision ergonomic adjustment.
The Lotto Medium Back Mesh Operator Chair brings modern aesthetics and total posture control to any commercial or home workspace. Engineered with a durable polypropylene and fibreglass composite frame, it features a dynamic synchro mechanism, built-in seat slide function, and adjustable lumbar support. Available in both classic Black and a striking White-Grey frame finish, it comes standard with removable 3D armrests, carries a 135kg commercial load rating, and is GreenGuard GOLD certified for low emissions.
- Categories: Operator Chairs
- Weight: 16.8 kg
- Dimensions: L: 762 x W: 286 x H: 660
- Availability: Express Dispatch
- Product Type: Variable
Engineered Fibreglass Composite Frame & Modern Styling
Unlike standard plastic task chairs, the Lotto Medium Back Mesh Operator Chair is constructed using a high-grade polypropylene and fibreglass mix frame. This delivers superior structural rigidity, flex resistance, and long-term durability while maintaining a clean, modern aesthetic. Available in two versatile frame finishes – sleek Black for classic corporate setups or modern White-Grey for light, Scandinavian-inspired workspaces – it instantly elevates any fitout.
Complete Ergonomic Toolkit: Synchro Tilt, Lumbar & Seat Slide
A great task chair should adapt to the body, not the other way around. The Lotto chair incorporates a full suite of ergonomic adjustments to support proper posture during extended computer use:
- Synchro Mechanism & Gas Lift: Backrest tilt and seat tilt function together at a synchronized ratio to encourage natural movement, backed by a smooth gas lift height range of 430mm to 530mm.
- Integrated Seat Slide: Easily adjust the depth of the seat pan (480mm depth) to accommodate shorter or longer leg lengths, keeping your lower back supported without restricting circulation behind the knees.
- Adjustable Lumbar Support: Fine-tune lower-back tension to maintain your natural spinal alignment and eliminate lumbar strain during 8+ hour workdays.
- Removable 3D Adjustable Arms: Customise armrest height to match your desk surface, or detach them entirely for tight space requirements.
Certified Eco-Friendly & Sustainable
The Lotto chair meets strict international environmental and safety benchmarks, making it a responsible choice for modern offices and educational settings:
GreenGuard GOLD Certified
Tested for low chemical emissions (VOCs), ensuring healthy indoor air quality in climate-controlled office spaces, schools, and home environments.
135kg Commercial Capacity
Heavy-duty 5-star base on smooth castors engineered to support up to 135kg with complete stability.
5-Year Commercial Warranty
Backed by a 5-year warranty for peace of mind across company fitouts and workstation upgrades.
Where the Lotto chair excels
- Â Modern Tech & Creative Agencies: White-Grey frame brings a contemporary style.
- Open-Plan Administrative Hubs: Seat slide accommodates diverse hot-desking teams.
- Executive & Management Workstations: High-spec ergonomics for 8+ hour workdays.
- Home Offices & Hybrid Spaces: Compact medium-back footprint with premium features.
- Sustainable Corporate Fitouts: GreenGuard GOLD certified for green building standards.
Care & Maintenance Instructions
- Mesh & Fabric: Vacuum regularly with a soft brush attachment to remove dust. Spot clean fabric with a mild upholstery cleaner or damp microfiber cloth.
- Base & Castors: Periodically check castors and clear any lint or debris from around the wheels to ensure smooth rolling across carpet and hard floors.
- Gas Lift & Levers: Wipe down mechanism components annually; no external lubrication required.
Additional information
| Weight | 16.8 kg |
|---|---|
| Dimensions | 762 × 286 × 660 mm |
| Colour | Black, White-Grey |
| Assembled Depth | 580mm |
| Assembled Width | 685mm |
| Assembled Height | 950mm |
| Back Height | 520mm |
| Seat Width | 500mm |
| Seat Depth | 480mm |
| Seat Height | 430-530mm |
| Weight Rating | 135kg |
| Warranty | 5 Years |
Product Documentation
Technical Line Drawing
Standard budget office chairs rely on standard unfilled plastics that can flex, bow, or crack over time under daily commercial use. The Lotto frame blends high-impact polypropylene with structural fibreglass. This composite material provides superior lateral rigidity, higher tensile strength, and flex resistance while keeping the overall chair lightweight and modern.
The integrated seat slide allows users to adjust the seat pan depth forward or backward. Taller users can extend the seat pan to ensure their full thigh length is supported, while shorter users can retract it to eliminate pressure behind the knees and maintain healthy leg circulation. This makes the Lotto chair particularly well-suited for shared workstations and hot-desking offices.
The synchronised tilt mechanism links the recline of the mesh backrest with the angle of the seat pan at an ergonomic 2:1 ratio. As you lean back, the seat pan tilts slightly upward, keeping your pelvis in a neutral position, your feet planted flat on the floor, and your spine fully supported as you move.
Yes. The Lotto comes standard with 3D adjustable armrests that allow you to set the height to align with your desktop. If you prefer working armless - or need the chair to roll fully under compact returns, fixed keyboard trays, or low-clearance tables - the armrests can be unbolted and removed cleanly without compromising the chair's structure.
GreenGuard GOLD is one of the world's most rigorous chemical emission standards. It certifies that the plastics, adhesives, mesh, and foams used in the Lotto chair emit negligible levels of volatile organic compounds (VOCs), ensuring healthy, cleaner indoor air quality in modern, air-conditioned corporate and educational facilities.
The Lotto chair is available in two modern frame finishes:
- Classic Black: A sleek, timeless finish suited for standard corporate workspaces and executive offices.
- White-Grey: A bright, architectural aesthetic tailored for light-filled, Scandinavian-style interiors, tech hubs, and modern creative agencies.
The chair is built with a heavy-duty 5-star base and smooth-gliding castors rated for up to 135 kg commercial capacity. Its commercial pneumatic gas lift adjusts the seat height smoothly between 430mm and 530mm.
The Lotto Medium Back Mesh Operator Chair is backed by a 5-Year Commercial Warranty covering the composite frame, synchro mechanism, gas strut, seat slide hardware, castors, and mesh components against manufacturing defects.
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