Does Fortress stay warm when wet?
Yes. AERIS™ insulation keeps insulating even when wet, unlike down or thinsulate which loses much of its warmth when wet or wet from sweat.
Is Fortress insulation made in the USA?
Yes. Our AERIS™ insulation is proudly made in the USA and has been engineered and tested for extreme conditions.
How many layers does Fortress replace?
One BasePro can replace 2–5 traditional layers, giving you serious warmth while keeping you lighter, more comfortable, and less restricted.
What makes Fortress different from other cold-weather brands?
Warmth without the gimmicks. No batteries required, no bulky layering system—just lightweight AERIS™ insulation designed to keep you Warm to the Core™.
Work
BasePro Full-Zip
BasePro Full-Zip
1 color available
Storm
Storm
1 color available
Hybrid Hoodie
Hybrid Hoodie
2 colors available
Bibs Storm
Bibs Storm
1 color available
Stuff Sack
Stuff Sack
1 color available
Handwarmer Muff
Handwarmer Muff
1 color available
Summit Snow Pant
Summit Snow Pant
1 color available
