Same structure in the foot as the TEP, but in a knee-length sock. Ideal for winter expeditions.Specifications:- 86% Polartec PowerStretch®,- 6% Polartec PowerDry®, 4% ThermoLite®®,- 3% Nylon, 1% Stretch Nylon with Lycra® Compare prices from: Lorpen in Men's Underwear