Eco-friendly cotton bags are made of fabric, so you can certainly throw them in the washing machine before your next trip to the grocery store. In addition, they are the only shopping bags you will ever need, so there is no big pile of plastic in the trash, it takes up space in the cupboards. When the shopping is finished, it’s easy to fold the bags up, and slip them back into your car or near your front door, ready for the next time you need them.You can use the bags for clothes shopping, shoe shopping, books, or anything you need to carry. If you find cotton bags that you love to use and are convenient and efficient then you will find ways to ensure that you will constantly use them. The more you use them, it will be more economical.