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Jac-Shirt - Men's
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Jac-Shirt delivers breathable wool warmth in a durable overshirt silhouette
What Our Gearhead® Experts Are Saying:
"This Jac-Shirt is a workhorse. The wool is warm but not bulky, and it still insulates when wet. The hidden-button pockets keep things streamlined, and it layers perfectly over a flannel or under a shell."
We reach for the Jac-Shirt on crisp days when a flannel isn’t quite enough but a full jacket feels like overkill. Its tightly woven 18oz Seattle Wool offers naturally breathable insulation that stays warm even when damp—ideal for foggy mornings, chilly commutes, and long days in the field. The midweight build hits that perfect balance between mobility and dependable protection.
Dual chest pockets with hidden buttons keep essentials secure without catching on straps or packs, while button-adjustable cuffs and a traditional front closure nod to timeless workwear style. Rugged, warm, and remarkably breathable, the Jac-Shirt proves why wool overshirts remain a staple for all-season versatility.
Details
- 18oz Seattle Wool offers breathable low-bulk warmth
- Wool insulates even when wet for reliable performance
- Hidden-button chest pockets prevent snags when layering or carrying gear
- Button-front closure and adjustable cuffs for a classic overshirt feel
- Midweight construction works as a standalone layer or light jacket
- Item #FSNI0IS
- Material
- 100% wool
- Fit
- relaxed
- Style
- long-sleeve button-up
- Pockets
- 2 hand
- Activity
- casual
- Manufacturer Warranty
- limited lifetime
Unfailing Goods Since 1897
Filson was founded in 1897 to outfit prospectors and explorers for the Alaska Gold Rush. To this day, Filson makes Unfailing Goods, knowing that your well-being in the backcountry depends on your gear.