I just bought the Ziploc Vacuum Bag Kit. It comes with a pump and 3 quart sized bags. I bought 10 more bags, you can also get gallon sized bags. I think it cost around $8 or $9 at Walmart for both items. It says they are microwave safe, so I assume they will be ok when using them in the Sierra's to pour boiling water into.
Has anyone else used it? I did make some deer jerky. I made it on the dry side to last longer on the trip. When I first tried it the jerky was so brittle and sharp that it put small holes in the bag. I ended up wrapping the jerky in a paper towel and wax paper before vacuuming it and it worked great.