According to the relevant norms all textiles delivered by DELIUS are permanently flame retardant. For all furnishing and upholstery fabrics DELIUS uses high quality yarns made from Polyester FR or Trevira CS. Textiles made out of these fibres contain a built-in safety feature. DELIUS textiles offer long-term protection, unlike fabrics which have been subsequently treated with chemicals. This small but relevant difference results from the chemical construction of the polyester fibre: the flame retardant properties are firmly enclosed in the fibre. They cannot be changed by exterior influences.