"This bag is great for art supplies and it is made of high quality durable Plastic material 3x thicker then similar products on the market allowing it to support heavy items such as tools, cell phones, sketch pads, money, coins, receipt books, paints, and other supplies. These pouches are water and soil resistant making them easy to clean. Zipper design prevent the items lost inside. Double space inside space can deposit a variety of documents and data such as study and office supplies. Zippered mesh file bags are made of durable and environmentally friendly materials, durable and high quality. GUARANTEED Toughest, Strongest and most Durable bags on the market. Keeps your important items safe and secure."