Nghia Furniture - The leading export table and chair in Vietnam
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| Product | Ergonomic Chair SMA Lumbar Pro |
| Headrest | Fully 4D adjustable—height, 45° tilt, 3 cm forward/back, plus 3-step horizontal glide. |
| Backrest | Dual-back design; 2D height adjustment (5 levels), plus lumbar tilt across 5 domino positions for personalized spinal support. |
| Armrests | Advanced 5D motion—height, forward/backward, inward/outward, lateral shift, and 360° rotation. Inspired by Herman Miller Aeron, the PU-topped armrests include a 3 cm thick foam pad |
| Recline Mechanism | Supports up to 135° recline; 4 lockable positions (90°, 110°, 125°, 135°). Includes tension-adjustable recline force. |
| Seat | 50 × 50 cm cushioned seat; front edge padded. Seat pan glides forward/backward approx. 5 cm |
| Mesh Material | Uses durable, skin-friendly Wintex mesh from Korea. Engineered for over 100,000 rub cycles, safe for skin and fabrics. |
| Piston | Piston class 4 level achieved SGS certification for safety, good explosion resistance |
| Frame & Base | International office-grade PA plastic frame. The 5-star die-cast aluminum base supports a load up to ~1136 kg |
| Casters | 65 mm diameter PU-coated wheels—quiet and non-slip. |
| Controllers | Double springs |
| Chair leg | Designed with 5 husk legs, cast aluminum material with a load of up to 1136kg |
| Feature | Lumbar Basic | Lumbar A01 | Lumbar 01 | Lumbar 03 | Lumbar Pro |
|---|---|---|---|---|---|
| Image |  |
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| Backrest mesh | Taiwan mesh | Matrex mesh (USA) | Wintex mesh (Korea) | Wintex mesh (Korea) | Wintex mesh (Korea) |
| Seat material | Foam cushion with fabric cover / Taiwan mesh | Foam cushion with fabric cover | Foam cushion with fabric cover | Wintex mesh (Korea) | Wintex mesh (Korea) |
| Back height adjustment | x | 5 cm | 5 cm | 5 cm | 5 cm |
| Lumbar support adjustment | 5-level domino | 5-level domino | 5-level domino | 5-level domino | 5-level domino |
| Maximum recline angle | 125° | 135° | 135° | 135° | 135° |
| Recline lock | 3 positions | 4 positions | 4 positions | 4 positions | 4 positions |
| Piston | Class 4 | Class 4 | Class 4 | Class 4 | Class 4 |
| Chair frame | PP plastic | PA plastic | PA plastic | PA plastic | PA plastic |
| Armrests | 3D | 3D | 5D | 5D | 5D |
| Headrest | 4D | 3D | 4D | 4D | 4D |
| Base | Chrome-plated alloy | Chrome-plated alloy | Die-cast aluminum | Die-cast aluminum | Die-cast aluminum |
| Warranty | 3 years | 5 years | 5 years | 5 years | 5 years |
Under $200 USD, with a 5-year warranty, using premium-grade materials found in high-end ergonomic chairs. Ranked as the TOP 1 ergonomic chair under $200 in search and purchase volume on major e-commerce platforms.
Over 80% of office workers suffer spinal injuries due to poor sitting posture and substandard chairs. These outdated office chairs accelerate spinal aging and lead to chronic pain. The SMA Lumbar chair was developed to address these issues, with patented dual-back design not found in any other ergonomic chair in Vietnam.
Dual-back support with 5-level lumbar tilt adjustment and 5cm vertical movement adapts precisely to each user’s spine – especially effective in supporting the L1–L5 vertebrae.
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Wintex Korean mesh – twice as durable, skin-friendly, and elastic.
Highly rated by users for its unique support features compared to other models – even premium ones like ISee-M, ISee-X, or Dvary Butterfly. Uses the same Wintex mesh as Ergohuman chairs, which are among the most popular mesh chairs in the US, only behind Herman Miller Aeron’s Pellicle 8Z mesh.
Adjustable to fit users from 1m55 to 1m85, up to 150kg. The dual-back design closely follows body movement and allows independent adjustment. Lumbar support with 5 tilt angles helps with long sitting hours, disc herniation, lordosis, and kyphosis.
Includes height, tilt, front-back movement, and an exclusive 7-level horizontal bar adjustment – ideal for users needing neck and upper back support.
Sliding Seat Pan (5cm): The seat of the Lumbar ergonomic chair is designed quite wide and is made of soft foam with 2 versions of dustproof fabric and easy-to-clean PU leather. The seat of the Lumbar ergonomic chair can adjust the depth of the seat slide in and out by 5cm, helping users easily customize according to the length of each person's legs
5D Armrests: Modeled after Herman Miller Aeron with soft PU surface and 2.5cm inner foam for extra comfort. Fully adjustable in every direction, even 360° swivel, ideal for niche professional use.
135° Recline + Adjustable Tension: Lockable in 4 positions, with customizable tension based on body weight.
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8cm Height Range: Combined with adjustable backrest makes it one of the most adaptive ergonomic chairs on the market.
Die-cast Aluminum Base: Supports up to 1136kg.
Silent PU Wheels: 65mm diameter, anti-noise and anti-slip.
Piston Class 4: Certified by ISO, BIFMAX (USA), TUV & LGA (Germany), and BS5459 (UK). Offers more durability and stability compared to common Class 3 pistons found in cheap chairs.
Each box includes an instruction manual. Depending on the shipment, some screws may be pre-installed. Extra parts (screws, washers) are included as spares. For visual guidance, a detailed assembly video is also available.
