When you wear a garment that utilizes PrimaLoft insulation, you can count on warmth without bulk, lightweight softness, water resistance, and the same compressibility and packability as goose down. That means that not only will your synthetic-insulated garment fit as comfortably on your body as it does in your pack, but in an unexpected storm in the backcountry, they’ll continue to keep you warm and dry as you seek shelter. Originally developed to serve the needs of the U.S. Army, who desired a water-resistant alternative to down, PrimaLoft is recognized globally as the leader in synthetic insulation.