Smartwool Smartloft Vest - Women'sDesigned to for warmth, packability, and comfort, the Women's Smartloft Vest uses a nylon shell with DWR to protect you from the elements and 50% recycled Merino insulation to keep out the cold. FIT Regular FABRIC WEIGHT 58 g m2 GARMENT WEIGHT 320 g or 11. 29 oz CONTENT Shell: 100% Recycled Nylon. Sides: 47% Recycled Polyester, 38% Merino Wool, 15% Elastane. Lining: 56% Merino Wool, 44% Recycled Polyester. Fill: 50% Recycled Wool, 38% Wool, 12%