The days of covering your books with boring old brown paper bags are over. Book Sox are all 100% machine washable and reusable. Premium quality stretchable fabric book cover is the original Book Sox and is a winner of the PTPA Media, Parent Tested, Parent Approved Seal. The book sox are teacher recommended and are washable and reusable. The patented "V" stitch ensures a perfect fit on books even larger than 10" x 8" text size. They are sure to infuse some fun and variety into your textbooks, while helping to protect and prolong their lives!