FILSON MACKINAW WOOL JAC-SHIRT CHESSIE TAN
made with warmest 24-oz. Mackinaw Wool and Built to Last

WEARS LIKE A SHIRT, INSULATES LIKE A WARM COAT
The Filson Mackinaw Wool Jac-Shirt in Chessie Tan is a warm, breathable jacket featuring a button- front closure. Filson took one of their most iconic and versatile garments and upgraded it with their warmest 24-oz. Mackinaw Wool and added practical hand pockets, resulting in this special-edition Jac-Shirt. It wears like a shirt but insulates like a warm coat and is available this season in the striking new color, "Chessie Tan."
INTRODUCED NEARLY 50 YEARS AGO
Filson original Jac-Shirt, introduced nearly 50 years ago and built with soft and warm wool, serves as a heavy shirt or a light jacket. It's earned the enviable reputation for being the most versatile garment in a sportsman's tool kit. In 2016 Filson re-imagined that iconic classic, creating rheir beefiest jac-shirt with an entirely new level of warmth and protection. Built with the same wool that's sheltered foresters and sportsmen from wet and cold weather for over a century, Filsons heaviest jac-shirt is built to stand up to the elements for years on end. Only the longest and strongest fleece fibers are selected for their Mackinaw Wool, which are then spun into dense yarns and woven in an uncommonly-tight weave that turns away the weather and lasts for decades.
FILSON MACKINAW WOOL JAC-SHIRT – LEGENDARY WARMTH, BUILT TO LAST
The Mackinaw Wool Jac-Shirt bridges the gap between a rugged jacket and a timeless outdoor shirt — offering unbeatable warmth, durability, and heritage style. Crafted from Filson’s legendary 100% virgin Mackinaw Wool, this versatile layer has protected adventurers, loggers, and outdoorsmen from harsh weather for over a century.
Designed to insulate like a coat yet wear like a shirt, it’s ideal for year-round comfort whether you’re in the backcountry or the city. The naturally breathable wool fabric regulates body temperature, wicks away moisture, and keeps you warm even in damp or cold conditions. In fact, Mackinaw Wool can absorb up to 30% of its weight in water without ever feeling wet — a true testament to its superior moisture management.
Every detail of the Mackinaw Wool Jac-Shirt is built for performance and purpose. The flapped front pockets securely hold essentials close at hand, featuring hidden buttons that won’t snag on tools or outdoor gear. A button-front closure and adjustable cuffs offer a customizable fit and classic style that transitions effortlessly from fieldwork to fireside evenings.
What truly sets this piece apart is its uncommonly tight wool weave, engineered for exceptional wind and weather resistance. This dense construction not only locks in warmth but also enhances the jacket’s toughness — ensuring it stands up to decades of wear and adventure.
Light rain, wind, or cold — the Filson Mackinaw Wool Jac-Shirt delivers unwavering comfort and protection in all conditions. It’s more than outerwear; it’s a piece of Filson heritage designed to last generations.

The limited-edition Mackinaw Jac-Shirt-the simplicity of a shirt with the weather-resistant warmth and breathability that only Filsons Mackinaw wool can provide.
HIGH QUALITY MATERIALS
Filson makes bags and clothes since 1897. They know exactly what they do at Filson. Filson transforms exceptionally warm 100% virgin Mackinaw Wool to a comfortable warm jacket, perfect to protect your body in any weather.
MACKINAW WOOL, world’s best wool for all-natural comfort in the coldest weather
Filson Mackinaw Wool takes its name from the historic coats developed in the Mackinaw region of Michigan in the early 1800s. The fabric is a densely-woven twill constructed from the fleece of sheep raised in regions of the Pacific Northwest that encounter a wide range of weather throughout the year. The dramatic temperature swings force the sheep to develop a fleece that can protect them year-round in hot and cold weather, which is precisely why it does such a marvelous job of protecting us from frigid conditions. The uncommonly tight weave creates a barrier to wind and water while maintaining outstanding breathability.
FILSON MACKINAW WOOL JAC-SHIRT FIT: Relaxed fit allows room for midweight layers underneath. We recommend sizing down.
Filson Fit General: Filson clothing is known for its roomy fit, designed for maximum freedom of movement and comfort during outdoor activities. Also, the often classic, loose fit allows room to wear multiple layers, such as thermal clothing, shirts and jumpers, underneath. In addition, Filson sizes are based on US sizes, which are often slightly larger for European builds. From experience, we therefore recommend choosing Filson clothing 1 size smaller than your normal size for a better fit.
On our special FILSON FIT GUIDE page, you will find all sizes: chest, waist, hip, neck and sleeve length.
FILSON WARRANTY
Filson guarantees every item they make, covering:
- Defects in materials
- Manufacturing errors
- Production defects
WHY BUY THE FILSON MACKINAW WOOL JAC-SHIRT AT BEAUBAGS?
At BeauBags, we carry only authentic Filson gear, renowned for timeless style and unbeatable quality. Enjoy fast shipping, secure checkout, and expert advice on every order.
- Authorized International Filson Dealer
- Over 10 years of Filson expertise
- Europe’s largest Filson selection
- Fast shipping — order before 22:00 for same-day dispatch
- Free shipping & returns
- 60-day return policy and expert customer support
This Filson Mackinaw Wool Jac-Shirt is part of our carefully curated Filson collection. Explore the full range of Filson apparel and bags online.
FILSON HERITAGE OF QUALITY – Guaranteed excellence in outdoor clothing and gear.
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| Brand | Filson |
|---|---|
| Filson Product code | FMOSH0022 / 20303778 |
| Color | Chessie Tan |
| Material | 26-oz. Mackinaw Wool + 8-oz. cotton flannel lining |
| Features | >Built with warm and weather-resistant 24-oz. Mackinaw Wool >Special-edition colors for this season >Insulates even when wet >Button-close front and adjustable cuffs >Pocket flaps with hidden buttons |
| Size guide | S: 37-39 (chest: 93-100 cm) M: 40-42 (chest: 100-110 cm) L: 43-45 (chest: 110-116 cm) XL: 46-48 (chest: 116-126 cm) XXL: 49-51 (chest: 126-131 cm) |
| Guarantee | Limited Lifetime warranty against material and workmanship defect |
| Product care | Dry-clean only. Do not wash. Do not tumble-dry. Iron low if needed. |
| Made in | Sri Lanka |


