It seems to be a silicone elastomer covered in a European patent: EP2089465, equivalent to the WIPO patent WO/2008/065406: http://www.wipo.int/pctdb/en/wo.jsp?W

It seems to be a silicone elastomer covered in a European patent: EP2089465, equivalent to the WIPO patent WO/2008/065406: http://www.wipo.int/pctdb/en/wo.jsp?WO=2008065406&IA=GB2007004580&DISPLAY=DESC http://www.wipo.int/pctdb/en/wo.jsp?WO=2008065406&IA=GB2...