The North Face Summit Series Fuseform Originator climb/rainJacket.

The revolutionary FuseForm™ construction weaves multiple textile properties into one single fabric by eliminating the stitching and taping of traditional seams. What this means is you can have a single piece of fabric with different weights or denier threads, so heavier more abrasion resistant for the arms and shoulders and lighter on the lower torso. FuseForm™ technology allows this to be done without seams which can make for a lighter, tougher and more packable jacket. Waterproof 2.5 layer HYVENT.