Kraft paper bags are made from Kraft paper, which is a type of paperboard. Kraft paper is made from wood pulp that has been treated with chemicals to make it strong and durable. Kraft paper is often used for packaging food, because it is grease-resistant and can be easily printed on. Kraft paper bags are usually brown or white, and they can be either flat or gusseted. Flat kraft paper bags are ideal for packaging flat items such as books, magazines, and posters. Gusseted kraft paper bags are ideal for packaging bulky items such as clothes, towels, and blankets. Kraft paper bags can be sealed with a variety of methods, including stapling, taping, or tying. Kraft paper bags are an environmentally friendly packaging option, because they are made from renewable resources and can be recycled.