USA-MADE INSULATION
Patented AERIS™ technology.
WARMTH THAT WORKS. EVEN WHEN WET
Meet the next generation of cold-weather performance. Patented AERIS™ insulation delivers lightweight warmth designed to work even when wet.
WORKS EVEN WHEN WET
Engineered to help retain warmth when wet.
LESS BULK. MORE WARMTH.
Replace traditional layers with advanced insulation.
NO BATTERIES. NO GIMMICKS.
Just performance-driven warmth.
BUILT FOR THE COLD. LOVED BY OUR CUSTOMERS.
Discover the gear customers trust when temperatures drop.
THE TECHNOLOGY BEHIND THE WARMTH
MEET AERIS™. A BETTER WAY TO STAY WARM.
Patented, USA-made insulation engineered for lightweight warmth without the bulk. AERIS™ helps retain heat even when wet, keeping you comfortable as conditions change.
- Patented insulation technology.
- USA-made insulation.
- Lightweight warmth.
- Designed to perform even when wet.
FIND YOUR FORTRESS.
Everything you need to stay warm, comfortable and ready for the elements.
FIND YOUR PERFECT LEVEL OF WARMTH.
Whether you're working outside, exploring the mountains or preparing for extreme cold, find the right Fortress gear for your needs.
Arctic puff
Warmth Without the Bulk Stay warm, comfortable, and stylish wherever winter takes you. The Fortress™ Women's Arctic Puff Jacket combines a flattering fit with USA Made AERIS™ Ad...
Cloud Jacket
The Cloud Jacket is your perfect balance of lightweight comfort and serious warmth. Built with ultra-soft materials and Patented insulation, it wraps you in cloud-like coziness ...
Glacier
Temperature Rating: Comfortable from -5˚F to60˚F Insulation: Patented AERIS™ 250 (¼") insulation — exceptional warmth without the bulk Material: Lightweight 100% polyester linin...
Hybrid Hoodie
Hybrid Hoodie — The One Jacket You’ll Reach For Every Time Your go-to outer layer for everyday cold to extreme conditions. The Hybrid Hoodie uses patented USA-made AERIS™ 250 i...
GlovePro
FEATURES: The GlovePro is constructed with a windproof waterproof material, – Patented AERIS™ 250 (¼” / 6mm of loft) and 500 (½” / 13mm of loft) Insulation Technology Maintain...
Terra Hoodie
Terra Hoodie — Warm Where You Need It Most Built for work, adventure, and everyday wear, the Terra Hoodie delivers targeted warmth without bulk or restriction. Key Features In...
Glacier
Temperature Rating: Comfortable from -5˚F to60˚F Insulation: Patented AERIS™ 250 (¼") insulation — exceptional warmth without the bulk Material: Lightweight 100% polyester linin...
Arctic puff
Warmth Without the Bulk Stay warm, comfortable, and stylish wherever winter takes you. The Fortress™ Women's Arctic Puff Jacket combines a flattering fit with USA Made AERIS™ Ad...
Hybrid Hoodie
Hybrid Hoodie — The One Jacket You’ll Reach For Every Time Your go-to outer layer for everyday cold to extreme conditions. The Hybrid Hoodie uses patented USA-made AERIS™ 250 i...
Summit Snow Pant
The Fortress Summit uses Patented AERIS™ 250 insulation with 1/4" loft to keep you warm from -5˚ to 60˚F—even when wet. Light & Warm – Exceptional warmth-to-weight ratio f...
Shadow V2
The Shadow 2.0 is a lightweight jacket for cold, wet days when you still need to move. Patented AERIS® 250 insulation holds heat even when the jacket gets wet, so you are not st...
Polar Puff
Features: 4-Way Stretch Shell for comfort and durability Wind & Water-Resistant (DWR) finish 250 AERIS™ Insulation – warm, light, and non-bulky Zippered Pockets – ch...
Tundra
Engineered with top-tier materials, this jacket delivers unmatched durability and performance in extreme weather. Featuring windproof, water-resistant fabrics with a DWR (Durabl...
Work Coat
Designed for exceptional durability and warmth, this coat is built to withstand severe cold working conditions. Aeris 250 Insulation: Delivers superior heat retention for reli...
Wilderness
The perfect blend of durability, warmth, and quiet comfort — ideal for severe cold hunting conditions. Engineered with USA-made AERIS™ Inside 250 insulation and a tough, noise-r...
Storm
500 AERIS INSULATION 1/2" for superior warmth 250 1/4" insulation on arms for added comfort 100% Polyester with DWR (Durable Water Repellent) Finish for water resistance Wind...
Summit Snow Pant
The Fortress Summit uses Patented AERIS™ 250 insulation with 1/4" loft to keep you warm from -5˚ to 60˚F—even when wet. Light & Warm – Exceptional warmth-to-weight ratio f...
Shadow V2
The Shadow 2.0 is a lightweight jacket for cold, wet days when you still need to move. Patented AERIS® 250 insulation holds heat even when the jacket gets wet, so you are not st...
REAL PEOPLE. REAL COLD. REAL WARMTH.
Stories from customers who put Fortress to the test.
WARM TO THE CORE™.
Patented insulation. Real-world performance. Less bulk. More freedom. Discover a smarter way to stay warm.