Experience the best of nature & technology!   A great gift for both women & men. Keeps ears toasty warm with our exclusive terry pile.  The warm, luxurious softness of alpaca is complemented by the easy care & breathability of cotton.  Performance is enhanced with an innovative, moisture-wicking fiber made from recycled PET plastic bottles.  It's engineered with an all-natural, built-in copper & silver based ion additive that creates a safe, permanent anti-microbial barrier to help fight odor.  Undyed fiber is used when possible & varies from shade to shade.