Lightweight, flexible and waterproof, this winter boot is the ideal choice for adventures in demanding environments. Heatseeker insulation keeps your feet warm without weighing them down, which is perfect for quickly navigating chilly winter terrain. A HydroSeal waterproof membrane locks out rain and snow for day-long dryness, while a Winter Grip sole ensures optimum traction on different surfaces.HeatSeekerHeatSeeker is a synthetic insulation that provides heat when needed. Ideal for cold weather days.HydroSealExtremely robust and weatherproof laminate with microporous, water-repellent lamination, which keeps the temperature at the foot pleasant and dissipates sweat.TNF Winter GripTNF Winter Grip is a sticky rubber compound that remains soft when the temperature is below freezing. Product specific size information: Size runs small Fit: Normal Outdoor Shoes Application: Winter Type: Mid Cut Shoes Materials Sole Type: Rubber Membrane: Waterproof membrane with HydroSeal technology Sole: TNF Wintergrip Upper Material: synthetic leather Waterproof Over material Type: Synthetic leather Type membrane: HydroSeal Shoe Features Features: Attached by hook Closing system: Shoe laces Crampons: Not crampon-fixed