The Ambient 200 jacket is the warmest option in Sitka's Ambient line of active insulation. 200g of Primaloft Evolve construction brings cold to a standstill, while maintaining peerless breathability while you’re on the move. A durable water repellent finish fends off moderate rain and snow and a 20D Ripstop face fabric makes light work of heavy cover. Full-zip for easy layering and zippered hand and chest pockets to keep valuables in the right place. Subalpine.