SockPro 2.0
SockPro 2.0 – World's First Insulated Knit Sock
The World's First Insulated Knit Sock, featuring patented Aeris 250 ½" insulation.
Updated Features:
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Knit Ankle Cuff – Easy on & off
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Brushed Liner – Added comfort
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Improved Design – Better fit & support
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Aeris 250 Insulation – Helps keep feet warm & dry
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Moisture-Wicking – Breathable and sweat-resistant
Pro Tip: Keep your core warm first with BasePro layers or a Fortress jacket to help maximize warmth in your hands and feet. Stay hydrated for better temperature regulation.
For Sensitive Feet: Wear a thin wool or Merino non-cotton sock underneath SockPro for added comfort and to help prevent irritation from interior seams.
“Do NOT Wear near Fire”
Built for the Cold. Designed for More.
Fortress Clothing delivers innovative cold-weather gear powered by USA-made AERIS™ insulation. Designed for work, outdoor adventures, and everyday winter conditions, our products focus on lightweight warmth, comfort, and performance when the temperature drops.
Why Choose Fortress?
- Advanced Insulation Technology – Innovative AERIS™ insulation designed for cold-weather performance.
- Warmth Without the Bulk – Lightweight designs that help keep you warm without unnecessary layers.
- Performance in Wet Conditions – AERIS™ insulation is designed to retain warmth even when wet.
- Comfort and Versatility – Gear designed for work, outdoor activities, and everyday wear.
- Featured on Shark Tank – Discover the insulation technology behind Fortress Clothing.
FORTRESS CLOTHING — WARM TO THE CORE™
Gear up for the cold and experience a different approach to winter warmth.
WARMTH THAT WORKS WHEN WET
Designed to retain warmth even in wet conditions from rain or sweat.
LIGHTWEIGHT. SERIOUS WARMTH.
Get dependable insulation without the unnecessary bulk.
BREATHABLE COMFORT
Helps manage heat during activity so you can stay comfortable on the move.
Buy it with
Key Features
built with USA-made, patented insulation tested for over 16 years in real-world environments. It delivers consistent warmth even when wet, lightweight performance without bulk, and breathable comfort during activity.
Made to perform when it matters most, we offer quality that you can count on. Tested and proven to deliver consistent results, it's made for everyday use and beyond.
Wind & water resistant shells – protection from harsh elements4-way stretch fabrics – full mobility for work or outdoors
IN the wild
