Burton Snowboard Reversible Vest Men's Large L Insulated. The shell looking side is 85% polyester 15% nylon. The fleece looking side is 40% wool 30% polyester and 30% acrylic The insulation is 100% polyester. A friend gave me this vest as a hand me down 20 years ago. I am not sure how long they owned before passing it along. So I am not sure how old it is. Make an offer!