I gave these as a gift at Christmas so I am unable to give you an answer about this product feature. Sorry!
Answered on 2/13/2016 12:11:06 PM by Recently retired from Alaska
Water will bead off, but they certainly aren't waterproof. If you are REALLY concerned, I suggest putting the items first in a ziploc-type bag and then in the Pack-It cube. I haven't used them in a rainy situation yet.
Answered on 2/14/2016 2:23:54 PM by Carey the traveler from Arizona
These have some water resistance, but they are not waterproof.
Answered on 2/15/2016 10:53:50 AM by Product Specialist Greg from Sierra Trading Post
Hi, I didn't know the answer so I tested it. Sure enough water beads up and does not soak in. Afterwards I found the original packaging which states that they are indeed water resistant.
Answered on 2/20/2016 7:14:10 PM by TonyD from Connecticut