Parts of an office chair are the base, castors, gas lift, seat, backrest, tilt mechanism and armrests, and each one affects how the chair moves, adjusts and fits your desk. If you want the short version: the base carries the load, castors let the chair roll, the gas lift changes seat height, the tilt mechanism controls recline and movement, and armrests set where your arms sit and how easily the chair tucks under a table.
On this page
- Which parts matter most when choosing a chair?
- How do the main parts of an office chair work together?
- How should you compare the office chair ranges in this shop?
- What should you check before you buy?
- What does delivery, returns and warranty involve?
- What mistakes do buyers make with chair components?
- Frequently asked questions
When you compare office seating, look at the mechanism first and the upholstery second. In this shop, office chairs include leather, mesh and PU leather options in the Eames Office Chairs category, with 38 models priced from €179 to €409, for example 59x61x90 cm, and there are also related categories such as Dining Chairs, Eames Lounge Chairs, Le Corbusier, Designer Lighting, Accessories, Rocking Chairs and Special Offers.
Which parts matter most when choosing a chair?
The most important parts to compare are the base, castors, gas lift, tilt mechanism and armrests, because those are the components that decide how the chair adjusts, how stable it feels and whether it fits the desk height you already have.
Start with the base. Office chairs here use polished or chromed aluminium five-star bases. A five-star base is the standard layout because it spreads weight across five points and leaves space for castors to roll freely.
Then check the castors. Castors are the wheels under the base. They look minor, but they affect how the chair starts, stops and turns. Soft floor-friendly castors are fitted free on request; add that in the order notes. If your floor choice is the main issue, see this guide on castors for hardwood floors.
Next comes the gas lift, which is the cylinder between the base and seat. It raises and lowers the seat so you can match the chair to your desk. For a deeper explanation of how that part works and why it eventually wears out, read office chair gas lift.
The tilt mechanism sits under the seat. It lets the chair recline or rock and often includes tension control or a lock. If you are deciding between fixed and reclining movement, this page helps: Reclining Office Chair: Recline, Tilt and When to Use Them.
Finally, armrests affect clearance. A chair can have useful adjustments, but if the armrests do not clear the desk edge, the chair will not slide in fully. On this shop’s low-back soft-pad leather office chair (EA217 style), armrests are 68–78 cm and can clear a 75 cm desk.
How do the main parts of an office chair work together?
The chair works as a system: the base keeps it stable, the castors provide movement, the gas lift sets height, the tilt mechanism controls recline and the armrests affect positioning at the desk.
That is why one spec on its own rarely tells the full story. A high-back chair with a polished aluminium base may suit a larger desk footprint, while a low-back chair with a lower arm profile may fit better where clearance matters more than back height.
For background on standard office-chair construction and terminology, Wikipedia’s office chair overview is useful as a general reference.
| Part | What it does | What to check | Which models have it |
|---|---|---|---|
| Five-star base | Supports the chair and spreads load across five points | Material, finish and whether the footprint suits the room | Low-back ribbed leather office chair (EA117 style); low-back mesh office chair (EA117 mesh style); high-back ribbed leather office chair (EA119 style); high-back mesh office chair (EA119 mesh style); low-back soft-pad leather office chair (EA217 style); high-back soft-pad leather office chair (EA219 style); Executive lobby chair (ES104 style) |
| Castors | Let the chair roll and turn | Floor type and whether you want soft floor-friendly castors | Executive lobby chair (ES104 style); office-chair ranges with five-star bases; soft floor-friendly castors fitted free on request in order notes |
| Gas lift | Adjusts seat height | Published seat-height range and whether the chair reaches your desk comfortably | EA117 style 45–55 cm; EA119 style 45–55 cm; EA217 style 52–62 cm; EA219 style 52–62 cm; ES104 style 48–54 cm; D200 / D211 / D222 adjustable, range not published; D266 adjustable, range not published |
| Tilt mechanism | Controls recline or rocking movement | Whether there is a tension knob, tilt lock or multi-level recline | EA217 style tension knob and tilt lock; EA219 style tension knob and tilt lock; ES104 style tilt; D200 / D211 / D222 3-level recline |
| Armrests | Set arm position and affect desk clearance | Published armrest height and whether the chair can slide under the desk | EA117 style 68–78 cm; EA119 style 67–77 cm; EA217 style 68–78 cm; EA219 style 67–77 cm; ES104 style 70–76 cm; D-series armrest details not published |
| Backrest | Sets back height and the feel of the chair profile | Low-back or high-back, and published backrest height | EA117 style backrest 45 cm; EA119 style 63 cm; EA217 style 41 cm; EA219 style 60 cm; ES104 style 45 cm; D200 / D211 / D222 high-back mesh; D266 low-back plywood shell |
| Seat | Determines sitting area and depth | Seat depth, width and whether seat depth adjusts | EA117 style seat depth 46 cm; EA119 style 45 cm; EA217 style 42 cm; EA219 style 42 cm; ES104 style seat 58 cm wide and 48 cm deep; D200 / D211 / D222 adjustable seat depth; D266 adjustable seat depth |
How should you compare the office chair ranges in this shop?
The simplest way to compare them is by chair type first: leather ribbed, mesh, soft-pad, lobby or ergonomic mesh, because each group combines the main parts in a different way.
Here is the current range in the shop, using published prices and sizes only.
| Category | Models | Price range | Example size | Link |
|---|---|---|---|---|
| Designer Lighting | 4 | €190–€479 | 50x50x20 cm | Designer Lighting |
| Le Corbusier | 8 | €639–€849 | 56x160x69 cm | Le Corbusier |
| Dining Chairs | 17 | €90–€249 | 47x53x83 cm | Dining Chairs |
| Eames Lounge Chairs | 39 | €275–€1199 | 84x85x89 cm | Eames Lounge Chairs |
| Eames Office Chairs | 38 | €179–€409 | 59x61x90 cm | Eames Office Chairs |
| Rocking Chairs | 3 | €149–€149 | 63x81x76 cm | Rocking Chairs |
| Accessories | 6 | €139–€479 | 50x50x20 cm | Accessories |
| Special Offers | 13 | €90–€849 | 72x70x91 cm | Special Offers |
Within office seating, the lowest published price is the Decomica D200 / D211 / D222 ergonomic high-back mesh chair at €179 each. These are the shop’s own design, not a reproduction of any designer chair, with breathable high mesh backs, adjustable lumbar support, a height- and angle-adjustable neck pillow, 3-level recline, 360° swivel, adjustable seat height and depth, and a 150 kg rating.
The Decomica D266 low-back plywood swivel chair costs €199, uses PU leather rather than genuine leather, weighs 12 kg and is rated to 150 kg. If you want a leather office chair, check the ribbed, soft-pad or lobby models instead.
Leather office chairs in the ribbed and soft-pad ranges use genuine leather on the seat and the front of the backrest, with colour-matched matching leather on the underside and outer back. Mesh office chairs are not leather chairs.
If you want to compare office-chair formats in more detail, these pages are useful: how to find the best ways to buy an office chair for your needs, an honest buyer’s guide to replica office seating, EA117 management chair overview, EA219 high-back soft-pad guide, EA217 soft-pad guide and office chair replica parts explained.
What should you check before you buy?
Before buying, check the seat-height range, backrest height, armrest height, upholstery type, tilt controls and whether the chair’s castors suit your floor, because those details decide whether the chair works with your room and desk.
For example, low-back ribbed leather office chairs (EA117 style) are €299–€344, measure 59 × 61 × 90–100 cm, and have a seat height of 45–55 cm, backrest 45 cm, seat depth 46 cm and armrests 68–78 cm. The low-back mesh version is €299–€313 with the same overall dimensions and height range, but breathable mesh on a polished chromed-aluminium frame instead of leather.
High-back ribbed leather office chairs (EA119 style) are €339–€349 and measure 59 × 61 × 109–119 cm, with a backrest height of 63 cm and seat height 45–55 cm. High-back mesh versions are €299–€319 and measure 59 × 61 × 109–119 cm.
Low-back soft-pad leather office chairs (EA217 style) are €329–€349 and measure 59 × 61 × 90–100 cm, with seat height 52–62 cm, backrest 41 cm, seat depth 42 cm and armrests 68–78 cm. High-back soft-pad leather office chairs (EA219 style) are €344–€379 and measure 59 × 63 × 109–119 cm, with seat height 52–62 cm, backrest 60 cm, seat depth 42 cm and armrests 67–77 cm.
The Executive lobby chair (ES104 style) costs €399–€409, measures 72 × 70 × 91–97 cm, has a seat height of 48–54 cm, a 58 cm wide and 48 cm deep seat, a 45 cm backrest, armrests 70–76 cm, and includes a gas lift, 360° swivel and tilt on a polished or chromed aluminium five-star base on castors.
What does delivery, returns and warranty involve?
Delivery is free to the 25 countries available at checkout, orders are dispatched within 1–2 working days, and tracked DPD delivery usually arrives within 6–9 working days door to door.
Delivery is available to Austria, Belgium, Croatia, Czechia, Denmark, Estonia, Finland, France, Germany, Hungary, Ireland, Italy, Latvia, Lithuania, Luxembourg, the Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. The price shown is the price paid, with no extra charge added at checkout and no customs or handling charge collected on delivery in these countries.
Tracking details are emailed as soon as the order is dispatched. Weekend delivery is not part of the standard service. Most single-product orders ship in one package, while larger items may arrive in several boxes. Multi-item orders may be split across deliveries but are dispatched together.
You have 14 days from delivery to request a return. Items must be unused and in their original packaging, and nothing may be sent back without return authorisation from support@decomica.com. For a change of mind, the refund is made minus a €40 return fee covering DPD collection. If an item arrives faulty, damaged in transit or wrong, collection is free and the shop sends a replacement or a full refund if reported within 14 days with photos.
Every piece has a 2-year warranty against manufacturing defects. To claim, email support@decomica.com with the order number, a short description and photos, and the shop arranges a repair, replacement or refund as appropriate.
What mistakes do buyers make with chair components?
The common mistakes are ignoring armrest height, choosing upholstery before mechanism, overlooking floor type, and assuming all leather office chairs use genuine leather on every surface.
The last point matters. In the leather office chair ranges, the genuine leather is on the seat and the front of the backrest, with colour-matched matching leather on the underside and outer back. Mesh chairs are not leather, and the D266 is PU leather on a plywood shell, not genuine leather.
Another mistake is to focus only on back height. A higher back does not automatically mean a better fit for every desk. Sometimes a lower back and lower overall profile make more sense in a smaller room or where the chair must tuck under the worktop cleanly.
Buyers also forget packaging. Each piece is inspected before boxing for dispatch, and keeping the original packaging during the 14-day return window matters because returns must be repacked in it.
If you are also furnishing other rooms, the same shop carries lounge and dining pieces such as the Set of Two Eames DSW Chairs Replica PU Leather Black at €90, 47 x 53 x 83 cm, the Set of Four Eames DSW Chairs Replica PU Leather Black at €150, 47 x 53 x 83 cm, and the Chaise Longue LC4 Pony Skin Le Corbusier Chair at €849, 56 x 160 x 69 cm.
For lounge seating, examples include the Tall Version Eames Lounge Chair And Ottoman Replica – Black – Rose wood – Elephant Base at €949, 84 x 85 x 89 cm, the Tall Version Eames Lounge Chair And Ottoman Replica – White – Rose Wood at €949, 84 x 85 x 89 cm, and the Charles Eames Lounge Chair And Ottoman Replica – White – Walnut wood – Chrome Base at €909, 87 x 85 x 84 cm. These are separate from the office-chair range, but they are useful size references if you are planning a full room.
Frequently asked questions
Do all office chairs here have a gas lift?
All the office-chair ranges listed here have adjustable seat height, which means a gas lift is part of the construction. Published seat-height ranges are 45–55 cm for EA117 and EA119 styles, 52–62 cm for EA217 and EA219 styles, and 48–54 cm for the ES104 style. The D200 / D211 / D222 and D266 have adjustable seat height, but the exact range is not published.
Are all the wheels the same?
No. Castors vary in how they behave on different floors, which is why soft floor-friendly castors are fitted free on request if you add that in the order notes. If floor protection is your priority, choose that option at the time of ordering.
Are the leather office chairs leather all over?
No. The leather office chairs use genuine leather on the seat and the front of the backrest, with colour-matched matching leather on the underside and outer back. Mesh office chairs are not leather chairs, and the D266 uses PU leather rather than genuine leather.
How long does delivery take, and how are chairs delivered?
Orders are dispatched within 1–2 working days of confirmation and delivered by fully tracked DPD. Delivery typically arrives within 6–9 working days door to door. Most single-product orders ship in one package; larger items may arrive in more than one box, and multi-item orders can be split across deliveries while being dispatched together. Last checked: 24 October 2026 Author: Decomica Editorial
Decomica sells reproductions inspired by mid-century designs, identified as such on every product page; they are not made, licensed or endorsed by the original manufacturers or licence holders. The D-series office chairs are Decomica’s own designs.
