Any fabric with dye that doesn't run should be fine, for instance any quilting cotton. But to be extra safe you can use an undyed cotton. If you're making these for sale, it might be worth investing in organic cotton. Try http://www.pics.net/cgi-bin/miva?~co...us/koolcat.hts
Are you looking to make large tote bags, like people use for grocery bags? I'd use a fairly sturdy fabric, like cotton duck/lightweight canvas. If you want something really light, to be used in place of the cheapo plastic bags that you might put tomatoes in for weighing and protection against other things in your grocery bag, try a lightweight muslin or even gauze.
Are you looking to make large tote bags, like people use for grocery bags? I'd use a fairly sturdy fabric, like cotton duck/lightweight canvas. If you want something really light, to be used in place of the cheapo plastic bags that you might put tomatoes in for weighing and protection against other things in your grocery bag, try a lightweight muslin or even gauze.