ThermaSet – Men’s Extra-Warmth Outdoor Performance Base Layer Set

Meet the Beneunder TrueWarm Baselayer — built for fast-dry warmth in extreme cold. Designed with HeatApex Core insulation and 3D-Vents sweat channels, it keeps you dry, locks in heat, and moves with you. Ideal for high-output outdoor activity, it withstands damp chill down to -15°C.

Highlights：

• HeatApex Core: rapid sweat-wicking, long-lasting warmth
• Withstands cold as low as -15°C
• 6-second quick-dry fabric, stays fresh under pressure
• 3D-Vents sweat channels keep body dry during intense movement
• Flexible 360° stretch knit for unrestricted motion

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