Tundra Women's Nexi Winter Boot 100% Exterior: Suede. Lining/Cuff: 70% Wool/ 20% Rayon / 10% Cotton Imported Dyed lamb fur (Fur Origin: China) Rubber sole Shaft measures approximately 8" from arch Heel measures approximately 1" Platform measures approximately 0.75 inches Boot opening measures approximately 12" around The Tundra Boots&trade; Nexi has incredible style and provides amazing warmth to keep you comfortable all season long.