Toesock blister protection and freedom, NuWool(TM) odor resistance and thermoregulation - this is the liner for long treks and ambitious day hikes. Our patented five-toe design conforms to your foot for a streamlined fit that rides comfortably under an outer sock, and wraps a layer of NuWool(TM) around each toe to prevent the skin-on-skin friction that leads to blisters. It&&';;s also great on its own as a soft, superlight sock for summer adventures.