When the mercury is??plummeting, build up your warmth. Our multi-purpose Mercury Hat delivers unparalleled cold weather performance during an afternoon in the backcountry or evening commute. Shell: 100% Polyester. Lining: 100% Polyester. Insulation: Primaloft Silver??Hi-Loft. Highly packable. Engineered quilting. One size fits most.??. Machine wash warm. Tumble dry.. Imported. 193205162243 34389900006 F19H1593