The Eagle Creek Pack-It® Sac Large holds all your books and maps. Made of LinkSeal™ Mesh, the Pack-It Sac keeps your stuff dry and clean. Use your imagination for everything you can do with this Large travel sack. It can be used as for dirty clothes or to keep your essential items protected while travelling. A convenient carry clip secures this EagleCreek organizer in your bag. The Eagle Creek Pack-It Sac Large has a million and one uses.