Soundwave® Flo is designed to be used as a lightweight sound absorber in the upper frequency range (500 Hz and above). These panels help reduce disturbing reflections of environmental noise such as voices, telephones etc. Creating Flo Karim Rashid was inspired by sound waves and digital data. Material: polyester fibre. Colours: Anthracite, grey, and offwhite, alt. upholstered in Europost.Soundwave® Flo is labeled with the Nordic Eco label (Swan). License number 331 037. When adding the option Basfill, an additional filling improve the sound absorption for frequencies below 500 Hz. Basfill consists of recycled textile fibers and polyester fibers.