The covers of the original Theraline pillow are made of extraordinarily soft and high-quality cotton. Mercerisation and the particularly colourfast reactive printing give a fine sheen. All the fabrics used by Theraline are solidly and precisely processed, pre-shrunk and thus meet the highest demands on durability. Of course, all fabrics and colours meet the criteria of the Oekotex Standard 100 and are free of harmful substances.