Tundra Women's Whitney Winter Boot 100% Exterior: Suede. Lining/Cuff: 70% Wool/ 20% Rayon / 10% Cotton Imported Rubber sole Shaft measures approximately 8.5" from arch Heel measures approximately 1" Platform measures approximately 0.75 inches Boot opening measures approximately 12.25" around The Tundra Boots&reg; Whitney will keep you feeling cozy and warm during all your winter excursions in the city.