The North Face Women's ThermoBall Jacket is an insulated jacket that won't weigh you down. Featuring recycled fabrics and insulation, it minimizes your ecological footprint. The synthetic ThermoBall insulation is lightweight, compressible, and offers the benefit of maintaining warmth when exposed to wet weather. Warm-when-wet performance combined with a slim, active fit makes it a great choice as a midlayer for all-season hiking, climbing, and skiing.