BasePro Pant


(2 customer reviews)

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Part of a VERSATILE layering system, using the Patented AERIS 250 (¼”/6mm of loft) in key areas, one of the first insulated base layers, reducing the need for multiple layers.

Light-weight, nonrestrictive, breathable and comfortable between temps of -5°F to 70°F, depending on what it is worn with. 4-way stretch brushed polyester, comfortable against the skin, reinforced stitching ensures durability in demanding activities. Great for work or play.

Designed to be used ‘next-to-skin’ as a first layer, with the addition of another layer as needed for the cold.



– Use, in Core areas, of Patented AERIS 250 Insulation Technology (¼” / 6mm of loft) Maintains Warmth, Even When Wet.
– Reinforced Stitching
– Covered Elastic Waist Band with Drawcord Adjustment
– Unrestrictive Full Range of Motion
– Light weight, almost feels like nothing on at all
– First Layer for All Activities
– Reflective Fortress Logo at Front Left Thigh

– 94% Polyester / 6% Spandex 4 way Stretch
– 1 Sided Brushed

Additional information

Weight 21 oz
Dimensions N/A


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2 reviews for BasePro Pant

  1. Gilbert

    I have to say that these are an excellent product, yesterday I tried the basepro pants when I went snowshoeing, the temperature was around – 4 degree F and I was quite comfortable, by the way I was also using the hoodie 1.0, the regular mittens and the HotSox in an old pair of Canadian armed forces mukluk, so I’m glad I bought those Items too.

    From Canada

  2. Chris (verified owner)

    I took my family skiing in CO and three of four of us wore the BasePro Pant and the Top. I wore the crew neck BasePro Top which eliminated the need for another layer of either a turtleneck or a different clothing article to keep my neck warm and dry. I wore a Marmot Androo Jacket, a minimal insulated shell, over my BasePro to keep the wind out. One daughter wore a Hybrid Hoodie 1.0 with it and the temp regulated with the Base Pro; another daughter wore a goosedown jacket but was hot. Once she shed the goosedown for a soft shell, she was fine. Our activity temps ranged from -4 to 8 degrees F at night and 4 to 23 degrees F in the day. Those of us that wore the Fortress we were warm and comfortable always even as the temps increased. The only time we were overly warm was inside the condo in the morning as we were preparing for the day. The one that did not wear the Fortress Clothing wished she had it. The early remark was that it made her look fat. The others said “who cares – we just needed one layer and a shell and didn’t have to shed or add as the weather changed. Easy to get ready in the morning.”

    I’d love to see a later version of the Base Pro be thinner. I would also like to see the sleeves on the Top come down just a bit further.

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