INSULATES UP TO 30% BETTER THAN MERINO WOOL IN ANY CONDITIONS WARM OR COLD

ENVIRONMENTALLY SOUND ALPACA FIBERS ARE PROCESSED/CLEANED WITHOUT THE USE OF HARSH CHEMICALS TYPICALLY USED TO PROCESS WOOL.

  • Explore
  • Prevail
  • Conquer
  • Explore
  • Prevail
  • Conquer

WARMER THAN WOOL
COOLER THAN COTTON
SOFT AS SILK

ALTERA has developed high performance alpaca fleece socks for virtually every outdoor use. Choose the sock that suits your passion and experience an entirely new level of comfort.

  • TOTAL COMFORT  • 
  • MOISTURE WICKING  • 
  • THERMAL REGULATION  • 
  • SILVER INFUSION  • 
  • EASY CARE   
  • ENVIRONMENTALLY SOUND  • 
  • UNCONDITIONAL LIFETIME WARRANTY
  •  • Made in the USA