thanks for the input- sounds like the hi-tech stuff is not what I want then- this is not for my primary shelter, but for extra rain fly, pack cover, mud control etc. 100% rain proof not necessary, but sturdy is. don't really like drop clothes- have tried them, and they don't last a trip in our conditions. Was just hoping to reduce weight using modern materials. Guess I'll save my money, and keep using what I have.