Specification - 4 Roll 8.5" x 11" US Letter size thermal roll paper, 7M/roll, suitable for Letter thermal printer,Smooth printing,More suited to write in pencil. Wide Application:Roll Thermal Paper suitable for Documents, Study Notes,US Letter Paper is widely application in Home Office Business School,Ideal for business and travel printing. High Compatibility:ItriAce thermal paper compatible with COLORWING, Odaro, Itari , PokeLabel M08F Letter printer and M832 thermal printer,Thermal roll paper suitable for Letter thermal printer not for traditional inkjet or laser printer. Roll Continuous and Durable Paper:Roll thermal paper use advanced thermal technology,Thermal paper can be stored for at least 10 years,(Note: Roll thermal paper should store it in a dark and dry place) BPA Free:ItriAce M832 thermal paper is BPA free, don't worry about using this thermal paper will harm your health. Plus, ItriAce thermal paper has passed RoHs certification. It’s tested that the paper doesn’t contain any carcinogens. Please feel confiden to use the paper.