Our lightweight but strong bio-degradable cotton fabric bags are great to carry around. They can be folded into a small purse (if needed) and opened up to become a large bag. Most folks buy these bags to giveaway at events, fundraisers, at stores, supermarkets and trade shows. It could be used in a hundred other places. 100% cotton duck and hand sewn. The fabric thickness ranges from 2.5 ounces to 6.5 ounces. Any thicker; and it'll be classified as sturdy canvas due to the weave characteristics.