This ancient binding technique is also frequently referred to as Coptic binding. Using two needles, the pages of the book are sewn with a beautiful link stitch across the exposed spine, resulting in a strong and flexible structure. These sturdy little books are perfect for travel. They are sized to slip into a backpack or pocket. A button and loop or medieval thong closure will keep your journaling private. The papers used inside the books will vary, but all are gorgeous.