When you're facing high-alpine expeditions in challenging conditions, The North Face Summit Future Fleece LT 1/2 ZIP is built to deliver exceptional protection and support. It's so light, you'll hardly notice you're wearing it. But that doesn't mean it skimps on warmth. That's because Futurefleece™ fabric technology optimises the balance of thermo-regulation, weight and packability in this extremely thin layer. And if you're carrying a backpack, seamless shoulders provide extra comfort without the bulk. Summit Series™ layers all work together for optimum performance in terms of breathability, insulation, weather resistance and moisture management.