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De Vorm

De Vorm BV Dijkgraaf 38, 6921 RL Duiven

© 2026 De Vorm BV

LJ 1 PET Felt Armchair

  • Back to ProductsLJ 1 PET Felt Armchair
  • Introduction
  • Colours
  • Images
  • Projects
  • Specifications
  • Downloads

Introduction

LJ 1 PET Felt Armchair is a generous chair with slim lines and a multi-functional character. Seat and backrest are moulded from PET felt made of recycled plastic bottles, shaped through a single 3D pressing technique. The high-strength recycled steel frame supports the wide, ergonomically curved shell. Available in eleven PET felt colours with full frame customisation, LJ 1 fits offices, restaurants, libraries, and educational spaces alike.

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Comfortable enough to settle into, compact enough to fit tight floor plans. LJ 1 pairs naturally with conference tables, lounge setups, and waiting areas. Made to blend in or stand out, depending on your project.

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11 PET Felt colours

Eleven unique PET felt blends, each with its own texture and depth. Minor colour variations between batches are a natural result of the production process.

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Dark Grey
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Light Grey
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Dark Green
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Green
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Olive
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Yellow
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Marine
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Turquoise
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Brown
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Beige
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Pink

Specifications

  • Materials
    • Shell
      PET Felt
    • Frame
      Powder-coated steel
    • Upholstery
      Fabric + high-resilience foam
  • PET Felt
    • Martindale
      100.000
    • Pilling
      3/4
    • Care & Maintenance
      Please see our Care & Maintenance Guide
  • Technical details
    • Weight
      7 kg (+0.5 kg with upholstery)
    • Certifications
      • ANSI-BIFMA X5.1-2017 General purpose office chairs • BS 5852:2006 Ignitability test (performed on PET Felt) • ISO 12947-2:2016 Abrasion resistance test (performed on PET Felt) • ISO 12945-2:2000 Pilling Martindale (performed on PET Felt) • Product footprint report
  • Colours
    • Shell
      Yellow, Pink, Marine, Turquoise, Dark Green, Green, Dark Grey, Olive, Beige, Light Grey, Brown* *Due to the recycled content of the PET felt, minor colour differences may occur.
    • Frame
      Standard: RAL 9011 (Black) / RAL 9010 (White) Custom: any RAL colour Fine texture: RAL 1012 (Yellow PET), RAL 3005 (Pink PET), RAL 5008 (Marine PET), RAL 5020 (Turquoise PET), RAL 6007 (Dark Green PET), RAL 6020 (Green PET), RAL 7015 (Dark Grey PET), RAL 7033 (Olive PET), RAL 7044 (Beige PET), RAL 7045 (Light Grey PET), RAL 8014 (Brown PET), RAL 9011 (Graphite Black)
    • Upholstery
      Kvadrat

Downloads

  • Design files
    • LJ 1 PET Felt Arm Chair - Technical Drawing .pdf Download
    • LJ 1 PET Felt Arm Chair Upholstered - Technical Drawing .pdf Download
  • Reports & certifications
    • LJ 1 PET Felt Armchair - LCA .pdf Download
    • LJ 1 PET Felt Armchair - Material Passport .pdf Download
  • Product documentation
    • LJ 1 PET Felt Armchair - Product Setting Images - Hi-res JPG .zip Download
    • LJ 1 PET Felt Armchair - Product Solo Images - Hi-res PNG .zip Download
    • LJ 1 PET Felt Armchair - Productsheet .pdf Download

Bespoke options

Two standard frame colours are available: black (RAL 9011) and white (RAL 9010). Beyond these, specify any RAL colour for the frame, add upholstery, or combine options to match your interior.

Choose any frame colour

Choose any frame colour

The powder-coated steel frame can be finished in any RAL colour. Match it to the PET felt seat or create contrast for a bolder look.

Add upholstery

Add upholstery

For extra comfort, add seat upholstery in fabrics from the Kvadrat collection. A practical upgrade for settings where people sit for longer periods.

Images

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Material

Made from recycled PET felt

LJ 1's shell is made from PET felt, a durable material produced from recycled plastic bottles. Soft yet strong, with natural sound-dampening properties. De Vorm's single-mould pressing technique shapes the PET felt into a ready-to-assemble form, replacing multiple traditional production steps with one. The result is an ergonomically curved shell with varying thickness and a distinctive felt texture.

Learn more about our PET felt technology

LJ 1 in projects

From offices and campuses to restaurants and public buildings, see how architects put LJ 1 to work across the globe.

Global sports company

Global sports company

Office Amsterdam, the Netherlands by Gensler, Hollandse Nieuwe

Booking.com Campus

Booking.com Campus

Office Amsterdam, the Netherlands by Hofman du Jardin, CBRE Design Collective, i29, Studio Modijefsky

Korn Ferry Offices

Korn Ferry Offices

Office Paris, France by Gensler


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Designer

Laurens van Wieringen

LJ 1 is the result of De Vorm's long-standing collaboration with Laurens van Wieringen. Laurens is an Amsterdam-based designer who has run his own studio since 2013. His work spans product and interior design, applying smart solutions and production techniques from different fields to achieve clarity and quality.