Bamboo Monthly Bill/Invoice Organizer with Drawer Constructed from durable bamboo wood with a beautiful natural finish to complement any decor. Adds a touch of style to an office or counter and it keeps your bills and mail organized. Bamboo is a environmentally friendly and sustainable material. The 31 numbered slots allow you to organize bills so you never miss another payment. Use the drawer to store stamps envelopes pens and other mailing supplies.