STEC Long Johns​​ Thermal Underwear

Superior Breathability and Sweat-Wicking
Crafted from a premium rayon blend, this thermal underwear set offers excellent airflow and moisture management, keeping you dry and comfortable throughout the day.
4-Way Stretch Fabric
Engineered with advanced stretch technology, the fabric allows unrestricted movement while maintaining a snug, flexible fit—ideal for both lounging and active wear.
Enhanced Warmth with 280g Fleece Lining
Featuring a thick 280g fleece lining, QuietVirt men’s thermal underwear locks in body heat to deliver superior insulation in harsh winter conditions.
Designed to Last
Built for durability, it resists pilling, maintains high color fastness, minimizes static cling, and includes a tagless design for lasting comfort and quality.
Convenient Fly Design and Double Layer Waistband
The functional fly ensures easy access, while the 4CM double-layer waistband provides a secure yet comfortable fit without pressure points.