I just bought a pair of Rainshield rain pants that I need to shorten. The website (rainshield.com) calls it a microporous film made from polypropelyne membrane. I put the question of how to shorten the pants to the owner and here's the answer (nonanswer) that I got:
The seam is ultrasonically seamed and you can only find such technology overseas these days as there arenít any more machines in the US that do this. Because of this, it is out of expertise to advise you on how to do it any other way then by ultrasonically seaming the hem to maintain the water hold out. It is possible that thread would take and that you could use some sort of strong tape, but again, we couldnít stand behind that recommendation.
Has anyone worked with this "fabric" and is there a reliable way to shorten the pants? Should I just cut them and not worry about a hem (they hopefully won't be used alot)? Is there another method that we should try? They only cost $20, so I don't mind experimenting a bit or having a less than perfect solution. Thanks for your help.