Two Tone Sock Details Using Acrylyester fiber technology and strategic silhouette construction, we hand build our socks to regulate your feet's micro-climate by keeping them warm and dry in the burliest of weather and getting sweat up and away from your skin. Extra padding from the heel through the toebox aid in impact absorption without compromising mobility and circulation in the rest of your foot. Bulky socks in a snug fitting boot is the gateway to numb/cold feet. Proper circulation and mobility are your friends so we place padding where you need it most, on the bottom of your foot. As you know, heat rises.   As you also know, heat trapped in your boot creates a sauna effect, only there's no exit and you're trapped. Even on the coldest days your feet will eventually sweat in this claustrophobic climate. Our sock construction allows heat and moisture to rise and move away from your foot. The result is a foot that is dry and ready for some arse-kickin'! Shred on my friend......