Josef, how wet was it?

The polypropylene is recommended, not so much as additional insulative
layering, but rather to provide a thin layer immediately adjacent to your skin
that will take the sweat.  This way, you wash the 
polypro and don't need to clean the Thinsulate as often, so it lasts longer. 
(Less laundering maintains maximum loft in the Thinsulate fibers, as well as
its hydrophobic qualities).

If you are not warm enough, you can add argon to the suit with additional
weight to compensate.  The benefit of any additional insulative layering will
probably not outweigh the disadvantage in loss 
of dexterity.  The other option is of course, electric heat, using the Gorix
type material.  I think both DUI and Typhoon offer suits like this, which are
thin enough not to be a problem, but then you 
have the additional expense, as well as having to deal with the battery pack.

Hope this helps.

-Sean


On Tue, 4 Sep 2001 15:59:48 +0100, Gliviak, Jozef wrote:

>Guys, from various sources an underwear from polypropylene was recomended to
>me as the right choice for dry suit bottom layer to be worn (e.g. under
>thinsulate). According the information I've got it should transport water
>(sweat) from your skin to upper layers.
>
>I tried it and was a bit disapointed. May be it works well in open air but
>in closed enviroment when it was a bit wet it actually transported water
>under thinsulate and made more body surface wet and cold. What's your
>experience with this type of underwear?
>
>During those 4C dives which additional insulation do you use when yout
>Thinsulate is not sufficient?
>
>Best regards
>
>  Jozef Gliviak
>  Slovakia



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