Engineered for high performance with reduced weight, the Women’s Sierra thermal vest offers lightweight thermal efficiency. Featuring Stormtech Thermal Shell™ insulation and a DWR (Durable Water Repellent) finish, it keeps you warm and dry while shielding you from the wind. The synthetic down fill ensures optimal core warmth, while the windproof outer shell adds an extra layer of protection against the elements. Perfect for layering, this vest is your go-to piece for warmth and performance in cold, unpredictable weather.. . . . Machine wash cold. Gentle cycle with like colours. Do not use softeners. Do not bleach. Hang to dry. Do not iron. Do not iron decoration. Do not dry clean.. 100% Polyester pongee. Lining: 100% Polyester