Description
POLARMAX Active Stretch Base Layer Midweight Men’s Bottom — Midweight Thermal Bottom (polyester/spandex stretch knit)
Stay warm, move freely—these POLARMAX Active Stretch Base Layer Bottoms deliver heat-retaining comfort and mobility for cold-weather performance.
Crafted from a moisture-wicking, 4-way stretch polyester/spandex fabric, these midweight bottoms are designed to manage perspiration and retain warmth during active use. The brushed interior traps heat, while the smooth exterior layers easily under outerwear for maximum comfort and reduced friction.
Product Description
A premium midweight thermal bottom made from performance stretch fabric that keeps you warm without limiting movement. The brushed interior provides insulation and comfort, and flatlock seams reduce irritation. Designed for active pursuits and extended wear, this base layer adapts to your motion and maintains a dry, comfortable feel in cold to variable climates.
Key Features
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Size: Midweight thermal bottom — ideal for cold-weather layering, work, or outdoor recreation.
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Material: Polyester/spandex performance knit — stretchy, breathable, moisture-wicking, and quick-drying.
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Construction: Brushed interior for warmth; smooth exterior for layering comfort; elastic waistband for fit retention.
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Mounting: Full-length pull-on design compatible under workwear, bibs, or hunting pants.
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Hems & Stitching: Flatlock seams prevent chafing; reinforced hems for durability.
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Finish: Anti-odor and moisture-management treatment for all-day freshness.
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Care: Machine wash cold; tumble dry low; avoid fabric softeners.
Why It Stands Out
The Active Stretch Midweight Bottom provides exceptional warmth-to-weight balance with full mobility. Its moisture-wicking, anti-odor design ensures comfort across a full range of activities—from high-output work to long days in the stand or on the job.
Perfect For
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Outdoor professionals and tradesmen layering beneath work pants
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Hunters, hikers, and snow sport enthusiasts requiring warmth and stretch
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Warehouse and delivery workers transitioning between indoor/outdoor temps
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Everyday cold-weather use for flexible warmth

