I would want to make sure the upholstery fabric is washable. Bags can get dirty and bacteria laden so you need to wash them on a regular basis. I have some of the fabric ones from the grocery store and some I made out of canvas. About once a month I throw them all in the washing machine with the regular laundry. If I ever think I got something easily contaminated on them (meat juices or broken egg for example), they go in the wash right away.