Features of the Mountain Hardwear Men's Kor Strata Vest Primaloft gold active Highly breathable stretch Insulation Two secure zip hand pockets, left chest secure pocket Insulation: Primaloft gold active 60 g/m2 55% Recycled Polyester, 45% Polyester Fabric Details Pertex quantam air 20D stretch ripstop 59% recycled Nylon, 41% Nylon