The Shadow 3L Pant builds a 3-layer shell from 90D lightweight nylon ripstop, rated at 20,000mm waterproofing and 20,000g breathability with every seam fully taped. Mesh-lined zip vents open along the inner thigh, so heat and moisture escape during high-output movement without letting weather back in when they're closed. YKK zippers run the hand-warming pockets and the zip back pocket, and an adjustable waist pairs with cinch cuff hems to seal out wind at the ankle. What Our Gearhead(R) Experts Are Saying:"I unzipped the thigh vents halfway up a steep push and felt the heat dump out immediately, then zipped them shut when the weather turned and stayed dry through the rest of the descent. The ripstop never caught on brush either, even bushwhacking off the main line."