VaprThrm® Hi-Rise Insulated Sock

Don't be fooled by their odd looks! Like all RBH VaprThrm ®  products the Hi-Rise sock works by blocking  evaporative  heat-loss keeping heat and moisture from moving into the insulation of the 200 weight Polartec fleece as well as your inner boot. The technology has performed beautifully (for close to 25 years) in the coldest and highest places on earth.   After repeated requests for custom calf length Insulated Socks we now offer this version which stands 15.5" (a full 4.5" taller than the original).  The volume in the foot and ankle has been reduced to eliminate folds and pressure points...