Whether you are trudging through mud and meet a puddle, or treading over a frosty landscape, the foamy footbed made up of 1,000,000 microscopic bubble will insulate the wearer from cold surfaces.Unlike cotton-lined boots that absorb moisture, a SUPERDRI lining draws sweat away from the foot - keeping them decay and bacteria free, and as fresh as possible! The Women\'s Tideline 4.0 Boots from Grubs Boots LTD were simply made for walking!4MM INSU-FOAM ULTRA - gives all round foot comfort and insulation5mm POLYOU footbed - provides a soft cushioning for an athletic shoe feel1,000,000 microscopic bubbles that insulate the wearer from cold surfacesUNDERFOOT CHASSIS - provides a sure-footed platformSUPERLITE technology - makes this boot 30% lighter than conventional rubber bootsSUPERDRI lining - wicks moister faraway from the wearer\'s foot to stop a sweaty feelTRAIL-GRIP outsole - superior grip on a spread of surfacesColour: Black