EMU Australia Unisex Side Lace Up Boot 100% Suede Synthetic sole Shaft measures approximately 11 3/4" from arch Heel measures approximately 1 1/4" Platform measures approximately 3/4" Boot opening measures approximately 13" around Sizes run large, order one size smaller; half sizes round one and a half sizes down Lining made with 100% Australian Merino wool Natural fiber is breathable and odor free Same insulation properties as sheepskin at an affordable price