Did you know that an average shopper uses as many as 342 plastic bags per year? This is a lot taking into account that a person who uses on average 342 plastic bags is responsible for creating 25.14kg of CO 2. A good alternative to plastic bags are eco-friendly bags made of cotton. If you want to be more eco friendly, you will opt for cotton bags instead of plastic bags. Cotton bags are also more elegant and durable. A reusable and simple cotton bag is a good solution if you shop a lot and if you do not want to use plastic bags wherever you go.