Because our Mackinaw Wool is manufactured with an uncommonly tight weave

Adjustable side straps provide a no-twist fit

A proprietary blend of natural oils and waxes

The goose down that insulates this vest consists of large spherical clusters of the soft under-plumage of gray geese

or penlights

filson man heathered wool jac shirt fmosh0020w0456 412 Size:XL Because our Mackinaw Wool isThe Filson Jac Shirt has provided versatile warmth for nearly five decades. As a heavy shirt, an overshirt, or an insulating layer under a rain jacket, its flexibility has made it an outdoor staple. This version is made with a wool blend that increases durability and reduces drying time while maintaining wools renowned insulating ability, wet or dry. The chest pocket buttons are hidden beneath the pocket flaps to avoid snagging. The front and