We moved from a hot dry climate to a humid climate, we used cardboard boxes and everything was fine. All of my fabric was packed in small boxes and labeled by color. Some of the fabric was used as padding for glasses, between plates, between pots and pans, etc. Also all of our clothing and shoes were in cardboard boxes. I was concerned about the humidity but nothing was ruined, no mold, mildew, bugs, nothing was broken. We built a new house and all of our stuff was in storage for 14 months in a humid climate.