The North Face's legendary Himalayan Suit leaves nothing to chance when we're tackling the world's toughest summits and alpine conditions. 900 fill power down provides a world-class warmth to weight ratio, and its hydrophobic treatment protects against sweat or ice melt compromising the down's loft and ruining its insulating abilities. The suit has also integrated synthetic insulation into areas more likely to get wet to keep us warm in all weather conditions, which is essential for our high altitude expeditions. We also like the Himalayan Suit's women-specific fit with body-mapped insulation and baffles shaped for a women's body, a full drop seat to answer nature's call, and an internal vest-suspension system that offers us a better fit. This industry-leading suit has been a long-time staple on the worlds highest peaks, and it's now lighter, more thermally efficient, and as technologically advanced as ever.