Size C10 in great condition. Details: Removable Zylex liner uses a wicking layer next to the foot to handle sweat, and felt and thermal foil layers for heat retention. Synthetic and rubber shell blocks snow and slush. Snow collar with bungee lock helps keep wetness out during epic snowball fights. Patterned lugs on outsole boost traction. Jamil rates this boot to -40F (-40C)