Our Men’s Performance Tek Vest; made from 100% bonded polyester fleece; offers lightweight warmth and durability. It features a traditional fit; practical pockets; and a wind-guard. 100% Bonded Polyester Fleece; 11.8oz 2-layer bonded fabric for breathable; comfortable stretch Outer layer is polyester; inner layer is anti-pilling knit fleece Full-length wind guard; stand up collar and open sleeve cuff Side pockets and right chest pocket Home laundry Men's Sizes: S - 5XL Ladies' companion is 6447 Our Men’s Performance Tek Vest; made from 100% bonded polyester fleece; offers lightweight warmth and durability. It features a traditional fit; practical pockets; and a wind-guard. 100% Bonded Polyester Fleece; 11.8oz 2-layer bonded fabric for breathable; comfortable stretch Outer layer is polyester; inner layer is anti-pilling knit fleece Full-length wind guard; stand up collar and open sleeve cuff Side pockets and right chest pocket Home laundry Men's Sizes: S - 5XL Ladies' companion is 6447