Hyper Couloir Gauntlet An exceptionally warm and waterproof gauntlet designed for expedition use and climbing in the coldest conditions. Developed to provide the warmth and durability required at altitude whilst maintaining the dexterity needed for technical use the Hyper Couloir Gauntlet is our warmest glove. A GORE-TEX insert and a goatskin leather palm combine with double layer PrimaLoft® Gold insulation over the back of the hand.