Alvin 3-ring binder mesh bag is made from high-quality see-through vinyl with mesh webbing. Handy pencil pouch is designed to fit standard 3-ring binders. One side features heavy-duty grommets on a durable nylon band. The other side has a full-length zippered opening. For added functionality, the 8" x 11" pouch holds a 12" ruler diagonally. Tools shown not included.