AT covered the Emeco 20-06 Chair by Sir Norman Foster & Partners when it was introduced last fall. This spring Emeco expanded the 20-06 line to include a version with a leather-looking, vinyl-upholstered seat. The semi-upholstering does wonders to warm up the design. This softer version of the stackable, 80% recycled aluminum chair costs about $300 plus $90 per upholstered seat. See more on new additions to the 20-06 collection on the Foster & Partners website.