The Hupa is a great winter boot; Olantex water resistant membrane runs throughout to help keep your feet dry. The perfect duo of the hydro suede leather and super soft virgin wool liner add extra comfort whilst walking and will keep your feet warm and cosy. In addition, the Isowarm multilayer material innersole with an aluminium film will guarantee warmth when it's cold outside. Furthermore the boot is fitted with the OC anti-slip system, a mechanism built into the sole unit that can be adapted to provide ice spikes to help keep you safe when walking on snowy and icy conditions.