Sitka Ambient Jacket in Optifade SubalpineOur goal was to create a layer that worked harder and performed smarter. The answer was in partnering with PrimaLoft Evolve for the most active insulation on the market. Active insulations biggest benefit is its ability to adaptit traps heat while youre sitting and breathes more efficiently than static insulation while youre on the move. The Ambient jacket or hoody will increase the performance of your clothing system for any pursuit functioning as a