I have been using tyvek as a ground cloth in the most in climate weather you could imagine and it has "never" left me wet. Hope that helps...Happy Trekking...sabre11004...

The first step that you take will be one of those that will get you there !!! <img src="/forums/images/graemlins/wink.gif" alt="" />
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The first step that you take will be one of those that get you there 1!!!!!