Air purifying for a healthy room climate:

New sheep's wool not only has excellent acoustic properties but also has the unique ability to filter room air and neutralize it sustainably. Used as an acoustic filling material in different product series or as a visible absorber of the PUR12 Frame Nature series, the extraordinary properties of new sheep's wool are a guarantee for pleasant room acoustics and a healthy room climate. The secret behind the ability to clean room air sustainably is keratin, the protein fiber that makes up new sheep's wool. The molecules of amino acid branches are able to absorb and neutralize pollutants such as formaldehyde. 

Scientific evidence: German Wool Research Institute "Absorption and binding of indoor pollutants by wool using the example of formaldehyde, chemisorption of protein reactive air pollutants by wool Diploma thesis Stefan Thome 2006, absorption of air pollutants by new sheep wool