The Black Diamond Vision Hybrid Pant is perfect for cold-weather expeditions when we can't sacrifice warmth or weight. The ultralight, tough nylon fabric still allows for a full, natural range of movement as we tackle grueling terrain and technical ascents, and high-abrasion areas are reinforced with Liquid Crystal Polymer fabric to increase durability for reliable protection in any environment. These pants are packed with 60 grams of lightweight Primaloft insulation that features Aerogel material, which offers an industry-leading warmth-to-weight ratio that is trusted by astronauts to stay warm in this solar system's most challenging conditions.