The HotSox use the AERIS 1000 (1" / 25mm of loft) technology, a revolutionary patented insulation Technology that keeps you warm, even if it gets wet!
Just like the Classic Pant and Jacket, the Hotsox are Designed using the Polyester Mesh lining that helps pull moisture and sweat away from the body. The outer fabric is a wind resistant Polyester Micro Rip-Stop Taffeta with a DWR (Durable Water Repellent) finish which repels light rain and snow and decreases dry times. HotSox will keep your feet and toes warm and comfortable from -35°F to 50°F (when worn with the Classic pant & jacket). This unique footwear can be used as a slipper around the house or inside a boot as a liner. A lot of our customer even use them camping!
Please note! Sizes are in inches, not regular shoe sizes. We get a far better fit by sizing this way. Measure your foot from 'back of the heel' to the end of your longest toe. We suggest that you go UP 1/2 inch from the size you measure on the tape, for comfort.
*Made in the USA
What is Fortress Clothing?
Fortress Clothing, quite simply, actually keeps you warm in cold weather, even if you are wet. Dozens of others claim to "keep you warm in cold weather," but Fortress is different. We actually do it. We eliminate the need for bulky layers, which lead to excessive sweating followed by then being cold AND wet. Our patented technology keeps your body the perfect temperature WITHOUT layers. No sweat.
Who are our customers?
We passionately strive to serve and solve problems for those who work, play and enjoy activities that expose them to the elements found in the outdoors, by delivering innovation, quality and value in our goods and services. Our customers are as varied as the fish in the sea. We serve the paragliding community, allowing you to enjoy the sport you love without the constraints of layers and the discomfort of wind chill.
We outfit hunters and fly-fisherman. We keep the guys working the oil fields in North Dakota warm. Our cold weather clothing allows the skiers, snowboarders, snowshoers, and other winter sports enthusiasts warm without cumbersome bulk.
Our customers range from survivalists and preppers to the average Joe just trying to stay warm while shoveling his walk. Our customers are people just like YOU.
What do we believe?
We believe there is no such thing as bad weather only bad clothing or gear. We believe in going where there is no path and leaving a trail by thinking something nobody else thinks, building something nobody else builds or improving something that already exists.
What makes Fortress Clothing different?
We build products that are designed with purpose and end use in mind, utilizing the needs of our customers and the attributes of protection, mobility, strength and durability.
We don't just say "we keep you warm;" we actually do it.