LIGHTWEIGHT WARMTH
Designed to provide warmth without unnecessary bulk.
THE NEXT GENERATION OF WINTER WARMTH
WARM LIKE DOWN WORKS LIKE WOOL
Discover lightweight, cold-weather gear powered by USA-made AERIS™ insulation for work and outdoor adventures
Shop By Temp˚
From cool mornings to extreme winter conditions, find the right Fortress gear for your environment.
Mild cold
20°F to 60ºF
Lightweight warmth for cool mornings, everyday wear, and changing conditions.
Cold weather
-5°F to 50°F
Versatile insulation and strategic layers for cold days at work or outdoors.
Extreme cold
Below -30°F to 40ºF
Insulating layers and cold-weather gear for demanding winter conditions.
Temperature ranges are general shopping guides, not guarantees of comfort at a particular temperature.
A closer look at AERIS™ insulation
FORTRESS CLOTHING / INSULATION
MEET AERIS™ USA MADE INSULATION
USA-made insulation. Engineered for real-world cold.
Fortress Clothing is built around USA MADE AERIS™ insulation, designed to provide lightweight warmth without the bulk of traditional layering systems.
DESIGNED TO WORK WHEN WET
Fortress product testing insulation performance in wet conditions is unmatched
FEWER LAYERS. MORE FREEDOM.
Designed to simplify traditional cold-weather layering.
FORTRESS FAVORITES
Discover the gear customers reach for when temperatures drop.
BUILT FOR COLD CONDITIONS
GEAR FOR THE WAY YOU WORK AND EXPLORE
WORK OUTSIDE
Insulated clothing for demanding workdays and cold conditions.
SHOP THE COLLECTION
HUNT & FISH
Cold-weather layers and accessories for outdoor pursuits.
SHOP THE COLLECTION
EVERYDAY WINTER
Versatile warmth for commuting, travel, and daily wear.
SHOP THE COLLECTION
Famous Shark Tank Base-Layers
Explore cold-weather clothing one BasePro Layer replace 2-4 traditional layers.
SHOP THE COLLECTIONBUILT FOR THE COLD. TRUSTED BY CUSTOMERS.
BUILT FOR THE CONDITIONS
BUILD YOUR COLD-WEATHER SYSTEM
Start with the right base layer. Add the protection your conditions demand.
Step 01
START WITH BASEPRO
Build your foundation with Fortress BasePro, designed to work as the first layer in a cold-weather system.
Explore this layerSelected gear
Step 02
Jackets Vests
Choose a jacket, hoodie, or insulated layer to match your activity and exposure.
Explore this layerSelected gear
Step 03
FINISH WITH THE ACCESSORIES
Complete your setup with pants, gloves, mittens, socks, and the accessories your day calls for.
Explore this layerSelected gear
