electric heated mat is a new product ,It is also named thermo mat. It is connected with a transformer,which is connected with electricity resource . new foil heated material was used in the product,which is used in austronaunt before. It is safety due to PET surface of the foil. It is safety due to low voltage of 48V output. the mat sizes :37x50cm;50x70cm the price is FOB CHINA USD15/PC for 37x50 FOB CHINA USD20/PC for 50x70 if you are interesting ,visit our website, http://www.carpet-native.com look for thermo mat there details and photo.