The sheets in the book are made from superior quality, eco-friendly and chlorine free paper, ensuring whiter, brighter, consistent and smoother pages. PORTABLE SIZED - This mini memo pad is suitbale size for carry. High Quality, acid-free paper. NOTEBOOKS FOR ANY USE: These unruled notebooks can be used as travel diary, travelers notebook, journals, weekly planner, used for writing down ideas, keeping a travelogue, taking notes and so much more. Material:300g white cardboard, 70g offset paper 50 sheets, PP cover. NOTE: 1.Keep dry and avoid fire. 2.Keep dry and avoid fire and humidity.