The perfect layer for backcountry rock walls, big alpine faces, and frigid weekend ski tours, the Black Diamond First Light Stretch transition jacket is the ultimate in dynamic four-season insulation that breathes efficiently and stretches with your every movement. The First Light Stretch transition jacket is packed with migration-resistant Primaloft Gold Active, maintaining breathability during even the most intense high-output pursuits. The 20D nylon ripstop face fabric and stretch liner resists weather and encourages full range of motion, while remaining incredibly durable through rugged talus, brushy approaches and daily use. Additional features include an adjustable, climbing-helmet-compatible hood, a low-profile, single-adjust hem and a highly packable design that stuffs into the internal stretch mesh pocket and clips onto your harness, all your needs are covered.