A paperbound book, also called "softcover". Paperbacks come in two types: trade and mass market. Trade paperbacks are the higher end model, printed on better quality paper and larger in size. A common trim size for trade paperbacks is 6" X 9". Mass market books are smaller, generally around 4" X 7", and are often printed on lower grade stock. While large commercial trade presses usually release their books in hardcover first, independents increasingly go straight to paperback because they tie up less capital in inventory. However, going straight to paperback has its downsides: It is often harder to attract review attention for a paperback original; and you cut out the option of later selling the right to reprint the book in a paperback edition. See split edition, trade edition, fillet, separate cover, self-cover, binding, perfect binding, dime novel.