This is a down vest from Rocky Mountain Featherbed, purchased over 15 years ago. It's a special pattern down vest, using fabric from a 1950s Czechoslovakian army tent for the outer shell and flame-retardant fabric from the Swiss army for the lining. It was produced in limited quantities over 15 years ago, so it's quite rare. I've worn it about once or twice a year, but even then, I've only worn it about 10 times in total. There are some original imperfections on the tent fabric, please see the photos for details. The size is 40, which is roughly a men's medium. The insulation is European water-repellent down (90% down, 10% feather, 700 fill power). It maintains warmth even when wet. I believe the down volume is still the same. Materials: Outer: 100% Cotton Insulation: 90% Down, 10% Feather (700FP) Lining: 100% Nylon (70 denier, original nylon taffeta) Yoke: Cowhide #RockyMountainFeatherbed #DownVest #DownVestDuck #Vest