Asolo designed the Men's Manaslu 8000 Mountaineering Boot with the world's eighth highest mountain in mind. It's extremely protective and warm in high-altitude, frozen climates, and surprisingly technical on challenging terrain. The Cordura gaiter has a bit of stretch for free-moving comfort, and it's backed by Gore-Tex for rugged waterproofing and comfortable breathability. The inner boot has four-hundred grams of Primaloft insulation to ensure warmth in some of the coldest climates around, and an aluminum film reflects body heat back your way for ever greater warmth. Underfoot, six different layers of carbon fiber give great support, stability, and anti-torsional action without much weight. The Vibram rubber sole has TPU attachments for automatic crampons.