The human body uses energy to keep warm. PrimaLoft® uses a patented microfiber structure to help the body retain warmth and conserve energy.

PrimaLoft ECO insulation is made with 50% recycled polyester and provides superb thermal efficiency, water- and wind-resistance, compressibility and breathability.

PrimaLoft One insulation is as warm as down, compressible, breathable and offers superior water repellency so you remain dry, warm and comfortable even under the most extreme conditions.