Streamlined & protective, The North Face's Summit FUTURELIGHT Pant is a must-have piece. Constructed from 3-layer FUTURELIGHT, it gives durable, breathable-waterproof performance. Design to defy the challenges of mountaineering, you can ascend in confidence whatever the conditions. FUTURELIGHT is made with a Nanospinning process. The Nanospun fibres create Nano-level holes to allow for impressive porosity while still maintaining waterproofness, letting air move through the garment & provide more venting in the fabric than ever before. Through Nanospinning, weight, stretch, breathability, durability, & construction can be adjusted, to achieve optimal activity-specific performance.