• PrimaLoft® Spin, the highest performance yarn. Super soft, moisture mover, thermal insulator, absolute performance & comfort • Special front vamp to eliminate bunching at ankle bend • Super stretch ribbed leg and welt prevents muscle fatigue and pinching • Reinforced high abrasion areas for longer wear • Smooth, flat toe seam Content: 34% PrimaLoft® polyester, 34% merino wool, 30% nylon, 2% spandex |