Good Morning!
Last summer at Big Lots I bought some bags that were very heavy duty, about 2 to 2 1/2 gallon size, and had handles on the top. I packed our clothes for our drive down, 1 day's worth per bag, and then put those bags in a separate duffel type bag so that we didn't have to empty out all of our luggage when we stopped. I think the brand name was either Hefty or Ziploc, but I'm on my first cup of coffee just now, and can't really remember. Once I get the kids to school, I'll check to see if I have one around. These bags were very thick as I said before, and had labeling spaces on the front where I wrote everyone's name so we could sort them out quickly. They had a nice zipper seal on them. Now, if I can just find them!