Fiber Armchair
A shell armchair in recycled plastic and wood fibers with a matte finish and a steel tube base.
545 × 770 × 560 mm
Source: product page text — Fiber Armchair Tube Base, Black / Anthracite Black (FIARMTUN01011) — published as W 54.5 × D 56 × H 77 cm
USD 441, Fiber Armchair, Tube Base, Black / Anthracite Black, muuto.com US store (recommended retail price, excl. sales tax), 2026-10-14
Description
Overview
The Fiber Armchair, Tube Base is a shell armchair with friendly, embracing curves and a matte surface. Its shell is a composite of 100% recycled plastic and wood fibers, offered in five shell and base colour combinations.
Construction
- Shell of recycled post-industrial plastic with up to 25% FSC-certified wood fibers
- Tube base in powder-coated or chromed steel, plastic glides
- Shells can also be upholstered (textile, imitation leather or leather)
Specifications
- Variant measured: Black / Anthracite Black, item no. FIARMTUN01011
- W 54.5 x D 56 x H 77 cm; seat height 46 cm
- Net weight 6 kg
Story
A plastic chair the Muuto way
Boris Berlin of Iskos-Berlin says they "wanted to do a plastic chair the Muuto way", with the warm, soft touch that ordinary plastic chairs lack.

Recast in recycled plastic
Muuto remade the Fiber Chair family in 100% recycled plastic and wood fibers; the remake took two years of research and development.

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The armed Fiber chair for outdoors, in UV-stabilized recycled plastic with drain holes.

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Fiber Bar Stool
A shell bar stool of recycled plastic and wood fibers on a powder-coated tube base.

Fiber Conference Armchair
A fully upholstered Fiber armchair with a fixed seat cushion, recycled plastic shell and wood legs.

