Our Wool Vest Liner has provided reliable service for over two decades, with the versatility to wear on its own or zipped into select Filson Jackets. It's crafted with thick, tightly woven Mackinaw Wool, nature's most adaptable protection in changing weather. The tight weave turns back cold breezes, insulates dry or wet, and has the durability to last through generations of use. Zippered front closure with standing collar. Patch hand pockets.