They have a fully seam-sealed upper to keep water out, allowing you to trudge through snow without worrying.The inner section of the boot is made with a removable ThermoPlus felt inner, providing wrap-around warmth and comfort. And a Sherpa Pile snow cuff creates a distinctive stylist look whilst locking in additional warmth.Upper: Waterproof nubuck leather upper with seam-sealed waterproof constructionInsulation: Removable 9 mm washable recycled felt inner boot with Sherpa Pile snow cuffMidsole: 2.5 mm bonded felt frost plug.Outsole: Handcrafted waterproof vulcanized rubber shell with Sorel aero-trac non-loading outsole.Heel height: 1 1/4 in.Platform height: 3/4 in.Boot shaft height: 9 1/4 in.Measurements based on size 9