Sorel Women's Slimpack Ii Lace Leather Imported Synthetic sole Shaft measures approximately 6.5" from arch Upper: Waterproof nubuck leather upper with wool felt collar. Seam-sealed waterproof construction. Microfleece lining. Insulation: 100g insulation. Footbed: Molded EVA footbed with arch support, microfleece top cover. Midsole: Vulcanized rubber. Outsole: Insulated waterproof vulcanized rubber shell with herringbone outsole and leather wrapped heel. Vulcanized rubber compound is improved for wet traction.