Stretch GoreTex. Yes, stretch GoreTex... Klim stretch GoreTex rain suit just plain works. I have ridden through huge downpours and remained bone dry. Only thing I have ever worn that actually works. I have a collection of Klim jackets and pack the "rain suit" when I am wearing the Rally Air or the Induction jacket. Always pack the pants as I wear Motoport kevlar mesh pants seeing as Klim doesn't yet make pants for short fat guys lol... Rumour is they will be this fall.