Injected flame-retardant polyurethane foam over internal steel frame. Base is square tubular steel with matte coat finish; glides are steel with chrome finish or brass. Paper planes cover combinations shown on the following pages are recommended by the designers. Cover versions are graph jacquard, with Swarovski crystals, or Hallingdal solid colors with designers’ signature embroidery. Versions with Hallingdal solid colors can also be specified without signature embroidery at the same price; please specify no EMBROIDERY on order. Paper planes collection covers are not removable.