Transparent, moisture-resistant polypropylene envelope keeps materials neat and clean. Horizontal, file-style orientation makes inserting and removing documents easy. Full-sized, open-top back pocket provides convenient quick-access storage space. Durable elastic string and riveted button closure is designed for heavy use. Number of Sections: 1; Tab Cut: Untabbed; Size: Letter; Punched/Unpunched: Unpunched.