Not so long ago a fully waterproof jacket that weighed less than 100 grams would have been impossible but thanks to the revolutionary gore texreg active fabric with shakedrytrade technology the oro easily achieves this milestone 7mesh chose the lightest most breathable fabric that gore texreg offers one that is permanently waterproof for the life of the jacket the fabric simply shakes off water and it breathes like nothing else its not just the incredible fabric yo