Specifications - 8.5Inch x 7m hermal paper, Prints 25 sheets per roll, 4 Rolls Papers Per Pack. Note: thermal printer paper only suitable for Letter thermal printer, not suitable for traditional inkjet or laser printer Usage - The two ends of the paper must be in the same straight line to that the printing is not offset. Note that the side of the paper with the black markings is the back side and needs to be printed face down, otherwise it print blank Premium Quality - thermal paper use advanced thermal technology, which provides clearer print results and can be preserved for up to ten years. Never worry using thermal paper printing contract, invoice, receipts etc can't keep long time Inkless - Thermal Thermal Paper eliminating the need for ink and utilizing only the printer and paper, which is an new economical printing way. Kindly note that the Thermal Printer Paper is compatible with Letter thermal printers and is not suitable for laser or inkjet printers Widely Applicable - Letter thermal paper is suitable for various portable printing scenarios, such as business, travel, outdoor, and office; you can put it in your briefcase or backpack and can print anywhere, anytime. Ideal for business and travel printing. Colour:White Material:paper Package Contents: 4 Rolls * Thermal Printer Paper Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.