Stretchy, warm, snow-shedding and breathable, our Nano-Air(R) Light Pants introduce a new concept for moving fast in cold climates. We designed these pared-down, pull-on pants as a midlayer, though the fabric package extends the range of use in all directions: they excel whether worn alone, under or over layers. The ultralight, 100% nylon stretch shell and liner resists weather and slides with layers, yet the superb breathability and light insulation (40-g FullRange(R) insulation) lends unprecedented versatility. The elasticized waistband has an internal drawcord adjustment, and the invisible crotch zip (with 2-way head-to-head sliders) pairs with the Galvanized Pants for full alpine performance. The poly/spandex stretch-woven cuffs are shaped and patterned to push up easily, and either stretch over or tuck into an alpine boot. The simple, no-pocket design is patterned to reduce bulky seams and maximize stretch in this slim-fitting silhouette.