The skin track stretches up through the trees before breaking out onto an open alpine face, and the pace has been relentless since the car: the exact situation the Patagonia Nano-Air Light Hooded Jacket was made for. The air-permeable Nano-Air fabric gets a durability update, while the lining features enhanced wicking and breathability. Improved shoulder and elbow articulation gives the jacket a tailored feel that disappears under a pack or harness, and the under-helmet-compatible hood deploys quickly when the wind picks up above treeline. What Our Gearhead(R) Experts Are Saying:"I wore the Nano-Air Light Hooded Jacket on a big ski touring day where the pace kept changing from steep bootpacks to long ridge traverses, and I never once felt the need to stop and adjust my layers. The breathable insulation manages heat so well that it stays comfortable at full output and then holds warmth the moment I stop moving."