Soundwave® Botanic is an acoustic panel and is designed to be used as lightweight sound absorbers in the upper frequency range (500 Hz and above). The panel helps reduce disturbing reflections of environmental sounds such as voices and telephones. Soundwave® panels are made of polyester fibres. Colours: Anthracite, grey, green and offwhite, alt. upholstered in Europost. Soundwave® Botanic 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 conists of recycled textile fibres and polyester fibres.