If you have one, you know: this one of our most trusted, best loved hoodies. Delivering proven, versatile performance as a midlayer or standalone, the Atom LT provides effective warmth for low-output and start-stop activities. Light, resilient and compressible, Coreloft™ synthetic insulation performs even if wet, and the hybrid outer combines wind protection at the body with breathable stretch fleece panels at the sides. The result is a highly versatile piece that performs across a range of conditions and activities.