Space Bags leak more or less. Return the really leaky ones for free exchange.
Just mail them back, include your name and address, new ones will show up
in 2 - 3 weeks. If you call, you get a disgruntled girl on the line, who works in
the denail dept. I bought through AMEX and Costco, you have lifetime
satisfaction guarantee with those companies.
As a footnote. I busted a perfectly fine plastic trunk filled with deflated soft stuff,
from my summer house. There is a lot of strength in 10 pillows.
Don't store in a suitcase for more than a day or so, or you will probably ruin it.