The Nike Gyakusou Men’s Lightweight Fill Vest for AW13, seen here in brown. Designed to meet the needs of runners, the Lightweight Fill Vest is a style that is lightly down-filled to ensure the wearer stays warm in cold conditions. Crafted from nylon, it is wind-resistant and has a brushed mesh lining to remove moisture away from the body. The vest features a deep hood, gently elasticised edges and twin zipped pockets on the lower front. It is finished with Gyakusou branding on the lower front. Made from 100% nylon – This vest fits small, we recommend trying a size larger than usual.