Parajumpers Men's Sully Down Vest in BlackTemperature Rating: 1 Medium. Light coat with reduced fill for mild climates. 10 den nylon ripstop vest with a light down filling. The shell fabric is transparent and internally coated. The vest features two zippered pockets in front and an inner mesh pocket. Two way front zipper and elastic strap neck closure. Lycra trim on armholes and bottom. The collar is ribbed on the inside. PJS patch at the back of the neck. The down has a fill power rating of