The Seager Bison Vest brings heavyweight duck canvas durability to a sleeveless cold-weather layer, with a soft flannel lining and medium-weight poly insulation that keep the core warm without adding bulk to the arms. A ribbed collar and full-zip front finish the rugged canvas build, while dual-entry front pockets with snap closures add everyday function wherever it's worn. Cut oversized for easy layering, it sizes down for a closer, true fit. What Our Gearhead(R) Experts Are Saying:"I expected the insulation to make this feel stiff, but I've worn it over a flannel on cold mornings and never once felt restricted reaching overhead or swinging an axe. The canvas blocks enough wind that the vest alone has kept me warm longer than I expected."