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Design story

Extension Chair: a place for the jacket as well

A chair often holds more than a seated person. A jacket lands on the back, a bag hangs from a corner, and the seat becomes temporary storage. Extension Chair begins by noticing those ordinary habits.

Written and reviewed by PatinaHall2 minutes readPublished 25 October 2026

One rear upright of a black wooden chair continues upwards to hold a light jacket above the seat.
PatinaHall editorial reconstruction. It is not a documentary photograph. The coat-stand extension gives a familiar secondary use a deliberate place. The image does not specify an edition’s counterweight or certify stability.
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Key facts & takeaways

At a glance

Subject
Extension Chair
Entry
Design story
Last reviewed
25 October 2026
Designed
2010documented

Three things to remember

  1. The designer is Sjoerd Vroonland.
  2. Moooi’s 2012 catalogue dates the design to 2010.
  3. Coat-stand, handbag and card-holder extensions are distinct forms.

Notice what the chair already does

The starting point is an ordinary room rather than an unusual material. Chairs collect clothes, bags and other possessions even when nobody sits down. Vroonland’s account of Extension Chair makes that observation the basis of the design.1

Giving an extra use a deliberate place changes its status. A jacket is no longer simply draped over whichever edge happens to be available. The furniture acknowledges that the person who uses it also arrives with belongings.

Let one part continue upwards

In the coat-stand version, an extended back element carries the idea above the usual chair outline. The recognisable seating form remains below, while another vertical reach offers a place for clothing. The change is easy to read because it grows from a familiar part.

Moooi’s archived catalogue distinguishes coat-stand, handbag and card-holder extensions.3 They answer related habits through different forms. The designer’s own explanation, published by Moooi, connects the object to those everyday observations.2

A familiar chair outline continues upwards into a post holding a garment shape.
Original PatinaHall schematic, not to scale. An extension gives an everyday secondary use a deliberate place. The drawing does not certify balance, counterweight or load.

A small addition can change the question

The Moooi catalogue dates the design to 2010; Vroonland’s present website places Extension Chair within his own furniture collection.31 Keeping those accounts distinct allows the historical product and later offering to retain their identities.

Extension Chair offers a cheerful way to look again at ordinary furniture. Instead of beginning with a wholly new kind of object, the design follows what people already do and asks whether the chair could meet them there more thoughtfully.

Research notesEvidence, connections and limits

The historic Moooi catalogue’s 2010 date and coat-stand counterweight description concern that edition. The designer’s later Vroonland collection is a separate offering. No universal stability, load rating or safety judgement is inferred from the extension concept.

Evidence map

Connected subjects and evidence

Reviewed facts

  • Designed 2010documented

    The archived Moooi Book 2012 names Sjoerd Vroonland and 2010 on printed page 193. The designer’s later collection page does not supply another first-design year.

    Reviewed 25 October 2026 by PatinaHall editorial.
    • Source 1Extension Chair introduction and Vroonland Furniture Collection
    • Source 2Moooi uploader; product attribution; description
    • Source 3Printedp193: Extension Chair specification

Reviewed connections

  • Extension Chairdesigned bySjoerd Vroonlanddocumented

    Sjoerd Vroonland designed Extension Chair. Moooi’s historic catalogue specifies solid beech and black lacquer for the design it dates to 2010 and distinguishes three extensions; the counterweight description concerns the coat-stand version. The later Vroonland-label offering is separate, with no universal stability inference.

    Reviewed 25 October 2026 by PatinaHall editorial.
    • Source 1Extension Chair introduction and Vroonland Furniture Collection
    • Source 2Moooi uploader; product attribution; description
    • Source 3Printedp193: Extension Chair specification
  • Extension Chairuses materialBlack-lacquered beech in the historic Extension Chairdocumented

    Sjoerd Vroonland designed Extension Chair. Moooi’s historic catalogue specifies solid beech and black lacquer for the design it dates to 2010 and distinguishes three extensions; the counterweight description concerns the coat-stand version. The later Vroonland-label offering is separate, with no universal stability inference.

    Reviewed 25 October 2026 by PatinaHall editorial.
    • Source 1Extension Chair introduction and Vroonland Furniture Collection
    • Source 2Moooi uploader; product attribution; description
    • Source 3Printedp193: Extension Chair specification

Research trail

Sources and further reading

  1. Extension Chair: Extension Chair introduction and Vroonland Furniture Collectionsjoerdvroonland.comAccessed 25 October 2026
  2. Extension Chair: Moooi uploader; product attribution; descriptionvimeo.comAccessed 25 October 2026
  3. Extension Chair: Printedp193: Extension Chair specification2rpistudio.hrAccessed 25 October 2026

Last reviewed 25 October 2026. Found an error or a stronger primary source? Contact PatinaHall.