Upgrade the thermal warmth of your outfit with these Czech military-issue pant liners. They're designed for extra warmth on chilly deployments—perfect for long, cold evenings ice fishing, or working outdoors on a frigid winter afternoon. Wear these under your coveralls or over your longjohns or both. Stay warm, stay happy.

• Warm, insulated material
• Drawstring cinch waist
• Elastic ankles