This 4-pack sketch book is a must-have for artists on the go. Whether you're sketching landscapes during a trip or simply capturing your ideas at home, it's perfect for you. Each book has 100 sheets, making it great for multiple projects. The books are spiral-bound, so you can easily turn the pages, and the pages are perforated for easy removal. The paper is thick, soft, and solid, and can handle frequent erasing. It's also PH neutral and acid-free, so it won't yellow over time. The sketch books measure 5.5 x 8.8 inches and weigh 68lb/100gsm, making them easy to carry around. They work with all drying media like pens, pencils, crayons, and more.