Worked just OK, but not great.
I used the 3 set bags for a 2 week trip in Morocco. One of the bags broke after just one week. The air kept coming in the bag so it didnt have a vacuum effect anymore. The other bags seemed fine but also not 100% air tight. Not sure if I would buy this product again. Maybe I would try with another brand. Probably Tatonka. A friend of mine got the Tatanka bags and seemed to work just fine.