About this item

• HEAVYWEIGHT MERINO WOOL BASE LAYER MEN: Built on First Lite's 350g Merino-X EXP fabric with fleece backing, these mens thermal underwear bottoms are engineered for extreme cold. The heavyweight construction delivers maximum insulation for late-season hunting, cold weather base layer use, and any day where standard thermals for men simply won't cut it.
• SUPERFINE 20.5 MICRON WOOL LONG JOHNS MEN: 95% merino wool and 5% spandex at a 20.5 micron superfine grade means these wool long johns are warm without being itchy or stiff. Natural odor resistance keeps you fresh through multi-day backcountry hunts. These mens long johns thermal set the bar for warmth, comfort, and performance in a single base layer bottom.
• THERMAL LONG JOHNS FOR MEN WITH FIELD-READY FIT: A functional fly, comfortable jacquard waistband, and flatlock seams make these thermal long johns for men as practical as they are warm. Flatlock construction eliminates pressure points under outer layers, so these mens base layer bottoms stay comfortable through a full day of hiking, sitting in a stand, or skiing in extreme cold.
• SILENT HUNTING THERMALS FOR MEN: Merino wool is naturally silent against brush and outer fabrics, making these hunting thermals for men the right call for bowhunters and late-season stalkers. No rustling, no noise, no giveaway movement. These thermal underwear for men hunting applications are built specifically for situations where staying quiet is as important as staying warm.
• WARMEST LONG UNDERWEAR MEN CAN LAYER: True-to-size fit and a high-rise waist mean these mens thermal base layer bottoms layer cleanly under any hunting pant or ski pant without bunching or riding up. Pair with the Furnace Long John top for a complete extreme cold base layer system. Available in Conifer and dark colorways to suit any cold weather setup.