How do you make a fabric bag without a sewing machine?

Why are they called Tshirt bags?

Plastic T-Shirt Bags and Grocery Bags. … The simple reason they are called t-shirt bags is that when held up by the handles, they resemble a classic sleeveless t-shirt. These bags are traditionally measured as a “Barrel”, with 1/6 Barrel being the standard size of a grocery bag.

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