This piece is part of the AAVVGG Archive and not currently part of the collection.

The keystone holds the arch, one of the oldest and strongest and of all architectural forms. The Keystone lounge chair comprises three autonomous yet symbiotic elements: a concrete back that buttresses the spine, a gently curved ceramic arch for your sit-bone, and the wedge-shaped rubber voussoir that supports and completes the arch.

The chair was originally a 450-kilo sculpture, exhibited at a Milanese art gallery in 2014. Thomas Ibsen from Please Wait to be Seated approached its Dutch designers, OS & OOS, and said, “Why not get this down to 30 kilos and upholster it? Turn it into a comfortable and practical piece of furniture?” He then teamed up with Kvadrat to use their exclusive Raf Simons design collection. The chair has since become a collectors’ item, sold to galleries and contemporary art showrooms across the globe.

A word of warning, though: it’s not just sit-bone friendly; kids love clambering all over it. So the chair gets our one-off label: PWTBSBTOYSFK (Please Wait to be Seated But Take Off Your Shoes First, Kids).

Origin Made in Denmark 

91 x 80 x 86 cm
36 x 31.5 x 34"

Product information