Sorel Women's Slimpack II Lace Boot - in stock now. FEATURES of the Sorel Women's Slimpack II Lace Boot Upper: Waterproof full-grain leather upper with collar Seam-sealed waterproof construction Microfleece lining 100g insulation Footbed: Molded EVA footbed with arch support, microfleece topcover Midsole: Vulcanized rubber Outsole: Insulated waterproof vulcanized rubber shell with herringbone outsole and leather wrapped heel Vulcanized rubber compound is improved for wet traction