These pants' nanomembrane consists of an extremely thin layer that enables greater breathability. There's no danger of overheating with these pants, so you don't have to keep changing clothes layers. The pants were designed to stay waterproof in the toughest conditions, which means that you're protected from both perspiration and rain at the same time. The Purist pants are part of The North Face's Steep Series, which was specially developed for mastering the high, steep, deep slopes sought out by freeriders. FUTURELIGHT materials are designed in combination with other webbed structures, making the fabric even thinner and stretchier. The FUTURELIGHT Purist pants are incredibly light and comfortable, they're completely silent, and they feel soft and stretchy to touch. They also protect you in the most challenging environments. If you're the kind to switch between activities, you'll need the lightness and robustness these versatile pants have to offer. The technology has been tested all over the world by The North Face's Elite Team. They've used it in the toughest conditions and some of the garments have been tested for a total of 100 days. Proven durability. The future of our planet was among the brand's top priorities when developing FUTURELIGHT. Good working conditions, eco-friendly workplaces and PFC (perfluorinated chemicals)-free DWR coating on all FUTURELIGHT products without exception. In other words: minimum ecological footprint and maximum performance. The FUTURELIGHT Purist pants are equipped with the world's most advanced, breathable and waterproof technology for outdoor clothing. The pants offer top comfort and performance in all conditions. When it comes to protection in the backcountry and during challenging trips, you can count on the Purist.