Best Office Chairs Europe

Sedus se:flex

Task chair by Sedus, made for the European market in Germany. Every figure below is the manufacturer's own, with the source listed.

Updated By The Best Office Chairs Europe editorial team4 sources

A German task chair declared to EN 1335-1 Type A, with the Blauer Engel, 3D armrests, adjustable seat depth and forward tilt, and an automatic weight-sensitive mechanism.

Sedus se:flex: side view to scale with seat-height rangeSchematic side view of the Sedus se:flex drawn to scale from Sedus's published dimensions. Seat height 400–520 mm against the EN 1335 Type A range of 400–520 mm. Made for Europe in Germany.020040060080010001200MADE FOR EUROPE INGermanySIDE VIEW TO SCALE · MMEN 1335 Type A 400–520Published 400–520 mmHighest setting
Schematic side view drawn to scale from Sedus's published dimensions; the dashed outline is the highest seat setting. Not a drawing of the product's exact shape. The map marks where Sedus says the European version is made.

Adjustments

What the se:flex lets you adjust, as published by Sedus. "Option" means it costs extra or depends on the configuration you order.

Adjustments
AdjustmentAs published
Seat depth adjustmentStandard
Backrest height adjustmentnot published
Lumbar supportAdjustable in height
Armrests3D
Recline tensionAutomatic (weight-sensitive)
Recline locknot published
Forward seat tiltStandard
HeadrestOption

Manufacturer notes: 'Similar' mechanism with automatic weight adjustment; options ComfortSwitch (soft/firm) and ActiveMotion (3D-moving seat). Sliding seat 70 mm standard. Lumbar height-adjustable; option with adaptive depth adjustment. Multifunction armrests: height 100 mm, depth 40 mm, pivot 40° in/20° out; 4D armrests optional. Optional neck support (height and tilt).

Fit: seat height against EN 1335

The published seat-height range is 400–520 mm (Product page: 400–520 mm (gas lift with depth springing); Sedo-lift III 420–530. Brochure drawing shows 390–530). It spans the full EN 1335-1:2020 range for Type A, Type B, Type C.

Seat-height range compared with EN 1335-1:2020 types EN 1335 Type Ax: 400–540 mm; EN 1335 Type A: 400–520 mm; EN 1335 Type B: 420–510 mm; EN 1335 Type C: 430–480 mm; se:flex: 400–520 mm 380420460500540580620660 EN 1335 Type Ax EN 1335 Type A EN 1335 Type B EN 1335 Type C se:flex 400–520
Seat height in mm, loaded seat. Grey bars: the range each EN 1335-1:2020 Type must cover. Black bars: the manufacturer’s published range.

Using the popliteal-height ratio of 0.255 × stature and a 25 mm shoe allowance (Pheasant and Haslegrave, Bodyspace; see the height calculator), this range puts the thighs roughly level for people about 147–194 cm tall. That is an estimate from average body proportions, not a fitting.

Check this chair against your own height.

Prices in Europe

Prices from official Sedus stores, as listed on the date shown. They are for the configuration described; options change the price.

Official store prices
MarketStorePriceConfigurationChecked
DESedus Online Shop€780se:flex Membran Bürostuhl, base price on product page20 October 2026

Compare these prices in euro, with and without VAT.

Where it is made

Sedus gives Germany as the place of production for the European version (source). Sedus states that "development and production take place at two locations in Germany" (Dogern and Geseke) but not which site builds this chair.

More on the company, its plants, warranty and take-back terms: Sedus in Europe.

Sustainability, repair and warranty

  • EPD: no third-party verified EPD found.
  • Environmental and emissions labels: Blauer Engel · Greenguard.
  • Recycled content: 24.89% (3.83 kg), EPI configuration.
  • Warranty: 5 years (5 years; '10-year guaranteed repairability' (EPI)). Your two-year legal guarantee from the seller applies on top; see warranty and guarantee.
  • Spare parts and take-back: 10-year guaranteed repairability 'Disused products are taken back by agreement'

How to read these documents: sustainable office chairs, by the numbers and repair and spare parts.

Spec Index: 73 / 100

The Spec Index adds up points for what Sedus publishes: adjustments, seat-height span, load rating, warranty and environmental documents. Missing data scores zero. It says nothing about comfort.

Spec Index: computed from published specifications only (rules). Not a comfort rating or a test result.
CriterionPoints
Adjustability / 4027
Seat-height range vs EN 1335 type A / 2020
Load and standards disclosure / 1513
Warranty / 104.2
Environmental disclosure / 159
Spec Index / 10073

What we could not verify

  • Overall height
  • Launch year
  • Where made (Dogern or Geseke)
  • Recline lock
  • Backrest height adjustment

Sources

  1. Sedus — official product page: www.sedus.com/en/products/chairs/seflex
  2. Sedus — se:flex brochure 12.2025 (PDF): www.sedus.com/download/4abca2fe48194e358ed9a1c98d4d3c41
  3. Sedus — se:flex Environmental Product Information, plastic base (PDF): www.sedus.com/download/d39054cddc9c4fc2bc2a43d2ed6b794c
  4. Sedus Online Shop (DE) price: shop.sedus.com/se-flex-Membran-Buerostuhl/ef-122

All sources checked 20 October 2026. Where a manufacturer does not publish a value, we say so rather than estimate it.

Cite this page

Best Office Chairs Europe, “Sedus se:flex”, https://bestofficechairs.eu/chairs/sedus-se-flex/, updated .

Data sheet

Maker
Sedus
Type
Task chair
Designer
Sedus Design Team
Made for Europe in
Germany
Seat height
400–520 mm
EN 1335 seat-height span
covers Type A, Type B, Type C
Seat depth
395–465 mm
Seat width
490 mm
Max. user weight
130 kg
Chair weight
15.23 kg
Warranty
5 years
Standards declared
EN 1335 · EN 1335-1:2023 Type A · GS · TÜV ergonomics approved
EPD
not published

Sedus product page