Built with their own waterproof textile technology, HydraShield, the M5 is a mechanical stretch 3-layer laminate that boasts a waterproof rating of 31,000mm and a MVTR breathability rating of 27,600g/m2/24hr.
www.blackovis.com
I can get you a discount on that with free shipping in all 50 states. Let me know if you are interested.