Lightweight warmth and breathability for intense ascents. This body-mapped layer is part of our athlete-tested Eiger Nordwand range. 20 denier Pertex® Quantum Air outer fabric provides wind resistance and breathability. Highly air-permeable Polartec® Alpha® Direct Polypropylene insulation delivers optimal warmth-to-weight ratio in the chest and upper sleeves. Stretchy, quick-drying Polartec® Power Grid™ at the back, side panels and forearms enhance mobility. With repairable features plus a patch kit, our design maximizes performance while using fewer resources. Packable in its chest pocket, the Eiger Nordwand IN Flex Air Hybrid Hooded Jacket excels in variable summer alpine conditions.