Made of recycled paper (even the eyelets are 51% paper!), Midori Pulp Storage Pen Case is a perfect marriage of sustainability and modern design. The simple, well-proportioned box holds your writing or drawing kit securely, and it opens and closes easily with its elastic band. There's a groove in the bottom of each box so that Pulp Storage boxes can stack with their elastic bands on, and additional grooves in the sides offer extra strength.