Letter size bond paper is a type of paper that measures 8.5 x 11 inches. It is one of the most common sizes of bond paper, which is a durable paper that can be used for a variety of purposes, including stationary, business letterhead, printing government bonds and other official documents, writing handwritten notes, and drawing with pencils, ink, or markers. Bond paper is often sold in the same dimensions as most other types of paper, and it is stronger than paper that is made solely from wood pulp because it is composed of anywhere from 20% to 100% cotton rag fiber.