Not Easy to Fade —- Direct thermal printing paper, not easy to fade,can be maintained for 20 years. Mini therma; Paper, Saving Cost and Time— Material: Thermal paper. Size: 57mm* 30mm, total 3 rolls in per box can meets your diverse needs.You don’t need to buy the ink. 57mm Thermal Paper, Environmental-friendly— BPA free, The material is good for environment.