Men's HeatFX ULTRALIGHT Base Layer Long Johns Size:L Elasticized cuff

Elasticized cuff

Treated with an anti-microbial for added performance

Everyday Ease

no side-seams and cuffed hems

Jersey knit t-shirt

Men's HeatFX ULTRALIGHT Base Layer Long Johns Size:L Elasticized cuffHeatFX's Ultralight fabric innovation is a combination of technically engineered fiber formations that provide superior warmth without bulk. Microscopic "pockets" inside the fiber create a thermal warming effect next to you skin. This fabric is designed with spandex to enhance fit, mobility, and moisture management. Keep your base layer selection simple. Take into consideration: Your Activity Level, Where You Will Be, and, How Cold You Will Get.