Elan Publishing Indestructible Field Notebook,Dot-Graph, 3.5×5.5in, Black,48 Pages, 4 Count, 4 Pack Built to last with waterproof, tear-resistant, and weatherproof materials Suitable for any condition, ensuring durability and reliability Each pack consists of 192 pages in total, with each book containing 48 pages (24 sheets) Made from stone paper, allowing you to write in the rain or even underwater Pocket-sized design measuring 3.5×5.5 inches, perfect for on-the-go use Features a lined pattern for organized note-taking Compatible with regular ballpoint pens or pencils, no special pens required