My husband and I currently bring our lunch to work in grocery store bags. However, I'd like to start cutting back on the number of plastic grocery bags we get, and will therefore need a different solution for our lunches. I'm looking for something sturdier than plastic (I often bring a fork and knife), and it would be ideal if I could throw it in the wash at the end of the week. I'm sure something like this exists, and my mind is just drawing a blank. I used to use a small lululemon bag until it was too worn out, but I'd like to find something more manly for DH.

Any ideas?