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Se7en LX134 Iris
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Why choose the Se7en LX134 Iris?
The Se7en LX134 Iris is a versatile NPR office chair for anyone who wants to sit comfortably and feel well supported throughout long working days. The fully upholstered backrest feels pleasantly soft and gives the chair a warm, understated appearance.
With its synchronous mechanism, weight adjustment, adjustable seat depth and seat tilt, adjustable lumbar support and 4D NPR armrests, you can fine-tune Iris to your body. Thanks to its wide adjustment range, it is suitable for different users and works equally well at a dedicated workstation or in a flexible office environment.
Wide adjustment range according to NPR 1813
Iris offers a wide adjustment range and can therefore be adapted to different body heights and working postures. Ideal for a personal workstation as well as for environments where several people use the same chair.
Soft upholstered backrest
The backrest is fully upholstered and features 30 mm of foam. This gives Iris a soft and comfortable feel, with support across the entire back.
70 mm comfort seat
The thick comfort seat supports you during longer periods of sitting and helps distribute pressure evenly across your thighs.
Dynamic sitting
The seat and backrest move synchronously with you as you change position. If you prefer more stability, you can lock the backrest in one of 4 positions.
Support tailored to you
The adjustable lumbar support and 4D armrests help you fine-tune the support for your lower back, arms and shoulders to suit your body.
Who is this office chair for?
- You are looking for an NPR office chair with an upholstered backrest for intensive daily use.
- You prefer a softer, more enveloping feel than a mesh backrest.
- You want to be able to precisely adjust the seat height, seat depth, seat tilt, lumbar support and armrests.
- You are between 151 and 192 cm tall.
💡 Prefer a breathable mesh backrest? Take a look at the Se7en LX232 Milo. Milo offers a similarly wide NPR adjustment range, but features a breathable mesh backrest instead of Iris's fully upholstered backrest.
What you can expect
- An NPR office chair with a fully upholstered backrest.
- Synchronous mechanism with weight adjustment from 45 to 125 kg.
- A backrest that can be locked in 4 positions.
- Adjustable seat depth and seat tilt.
- Lumbar support adjustable in height and depth.
- A 70 mm thick comfort seat.
- 4D NPR armrests with soft pads.
- Universal castors for hard and soft floors.
- 7-year warranty.
Frequently asked questions
Who is the Se7en LX134 Iris suitable for?
Iris is suitable for most users looking for a highly adjustable ergonomic office chair with an upholstered backrest. Thanks to its wide NPR adjustment range, you can fine-tune the chair to your body and working posture.
Is the Iris LX134 suitable for long working days?
Yes. Iris combines a 70 mm thick comfort seat and fully upholstered backrest with a synchronous mechanism, adjustable seat depth, seat tilt, lumbar support and 4D NPR armrests. This allows you to sit comfortably and regularly change position throughout the working day.
What is the difference between the Se7en Iris LX134 and Milo LX232?
The main difference is the backrest. Iris has a fully upholstered backrest with 30 mm of foam, giving it a softer and more enveloping feel. Milo has a breathable mesh backrest that allows more air to circulate. Both models offer a wide NPR adjustment range and extensive adjustment options.
What does NPR 1813 mean?
NPR 1813 is a Dutch practical guideline for the ergonomic application of office furniture and workplace accessories. For office chairs, this includes a wide adjustment range so that the chair can be adapted to different users.
How does the synchronous mechanism work?
With a synchronous mechanism, the seat and backrest move in a coordinated ratio when you lean back. This allows you to change position naturally while the chair continues to support you.
Can I lock the backrest?
Yes. The backrest can be locked in 4 positions. This allows you to choose when Iris moves dynamically with you and when you prefer a more fixed sitting position.
Does Iris have adjustable lumbar support?
Yes. The lumbar support is adjustable by 5 cm in height and 2.5 cm in depth. This allows you to adapt the support for your lower back more precisely to your body.
What type of armrests does the Iris LX134 have?
Iris has 4D NPR armrests with soft pads. You can adjust them in height, width and depth and rotate them through 360 degrees, helping to support your forearms while keeping your shoulders relaxed.
Is the Iris backrest height-adjustable?
Yes. The upholstered backrest is height-adjustable, allowing you to adapt the position of the back support more precisely to your body height.
What upholstery does the Iris LX134 have?
The standard version features Strick fabric on both the seat and backrest. This fabric is made from 100% polyester and has an abrasion resistance of more than 100,000 Martindale cycles.
Which colours is Iris available in?
You can choose from black, blue, dark green, beige and mid-grey. The seat and backrest can also be supplied in different colours (on request). Black is available from stock in Belgium and the Netherlands.
For other colours or delivery to other countries, the delivery time is approximately 6 weeks.
How do I adjust Iris correctly?
Start with the seat height and place your feet flat on the floor. Then adjust the seat depth so that your thighs are well supported without pressure behind the knees. Position the lumbar support at the level of your lower back and adjust the resistance of the synchronous mechanism to your body weight. Finally, set the armrests to a height that allows your shoulders to remain relaxed.
Are the castors suitable for hard floors?
Yes. Iris has 65 mm universal twin-wheel castors suitable for both carpet and hard floors. They are weight-activated and automatically brake when the chair is not in use, helping to prevent it from rolling away unintentionally.
How much warranty do I get on the Se7en Iris?
The Se7en LX134 Iris comes with a 7-year warranty in accordance with the applicable warranty conditions.
Not sure whether to choose Iris or another ergonomic office chair?
Not sure whether to choose Iris, Milo or another model? Contact us. Our experts will be happy to help you compare the options based on your body type, workplace and personal preferences.
Technical details
| Feature | Value |
|---|---|
| Brand | Se7en |
| Collection | Premium |
| Model | Iris LX134 |
| Type | NPR office chair |
| Upholstery | Seat and backrest in Strick |
| Mechanism | Synchronous mechanism with weight adjustment (45–125 kg) · lockable in 4 positions |
| Adjustments | Backrest height adjustment · seat depth adjustment · seat tilt adjustment · lumbar support adjustment |
| Seat height | 400–535 mm |
| User height | 151–192 cm |
| Seat width | 495 mm |
| Seat depth | 380–480 mm |
| Seat tilt | Adjustable up to +5.5° |
| Backrest height | 660–710 mm |
| Overall dimensions | H 1,250 mm · W 760 mm (with armrests) · D 700 mm |
| Seat | Comfort seat · 70 mm CFC-free foam |
| Backrest | Upholstered in Strick · 30 mm foam · height-adjustable |
| Plastic components | Solid black throughout |
| Lumbar support | Adjustable in height (50 mm) and depth (25 mm) |
| Armrests | 4D NPR armrests · height, width and depth adjustable · 360° rotation · soft pads |
| Base | Black plastic · solid colour throughout |
| Castors | Universal twin-wheel castors Ø 65 mm · weight-activated braking · suitable for hard and soft floors |
| Upholstery fabric group | Strick · 100% polyester · more than 100,000 Martindale cycles |
| Colours | Black · blue · dark green · beige · mid-grey |
| Standards and certifications | NPR 1813 · EN 1335 · GS mark · Blue Angel · FEMB level® · BIFMA e3 level Platinum · Quality Office |
| Recyclability | All materials are pure and recyclable |
| Weight (packed) | 20.5 kg |
| Warranty | 7 years |
Not sure which chair is right for you?
Our experts are happy to help you choose. Call or email us for advice.
📞 Call us ✉ Email us| Brand: Se7en |
| Ergonomic comfort: Seat depth adjustment and height-adjustable lumbar support |
| Movement mechanism: Synchro-tilt mechanism |
| Upholstery color: Stof Strick zwart - 8B01 |
| Frame color: Plastic components and star base black |
| Seat tilt adjustment: With seat tilt adjustment |
| Armrests: 4D NPR armrests, adjustable in height, width, and depth, and 360-degree rotatable with soft padding. |
| Seat height: 400 to 530 mm |
| Headrest: Without headrest |
| Wheels: Universal wheels |
| Ergonomic standard: NPR 1813 |
| Warranty: 7 years |
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