100% recycled polyester printed exterior. Benefits of Merino wool blended with polyester for enhanced durability. Designed for POW (Protect Smartwool's Winters) by Smartwool. CONTENT: Shell: 100% Recycled Polyester. Lining: 55% Merino Wool, 45% Recycled Polyester Exclusive Of Decoration. GARMENT WEIGHT: 72 g or 2.54 oz