1.0 Tall Men&
1.0 Tall Men&
1.0 Tall Men&

1.0 Tall Men's Thermasilk® Heritage Pant

Regular price$65.00
30% off applied in cart*


Over forty years ago Terramar was the first company to introduce pure silk performance base layer products. Today, Thermasilk is still the standard for people wanting a natural and breathable garment that is extremely lightweight and will keep you warm, dry and comfortable in all your indoor and outdoor adventures. Low profile design fit great under regular clothes to many any environment warmer. Our Thermasilk long johns provide warmth without bulk and go great with our Thermasilk Crew.


  • Natural Thermoregulation Technology keeps you warm and dry
  • Ultra-lightweight with naturally breathable
  • Stretch comfort waistband
  • Rib trim for unrestricted movement.


  • Thermoregulation technology provides comfort through a wide range of temperatures
  • UPF rated for sun protection
  • Warmth without the bulk
  • Natural Breathability allows you to warm up or cool down with ease
  • Moisture Management moves moisture from the skin to keep you warm and dry


  • 100% Filament Silk Jersey


Extended Holiday Returns
Enjoy hassle-free returns or exchanges on this item until January 31, 2023. Conditions apply.

Enjoy free U.S. Domestic shipping on all orders above $50

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Customer Reviews

Based on 2 reviews
Jean-François Reat
Great for active wear

I just purchased a new pair after wearing out my old pair that I'd had for 20 years. These are perfect for wearing under hiking pants, wool slacks, or ski bibs for active outdoor activities in moderately cold conditions from mid 20's to 40s

Gordon Breedyk
Thermasilk pant

Best long johns for comfort I am aware of.

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