Birken Mule men's and women's five-finger mule shoes 23 autumn and winter new black five-finger Birkenstock sandals and slippers are very designed. The taller head will show the size of the legs. The pants and skirts are matched together~ Upper material: imported calfskin Shoe lining material: sheepskin Sole material: original rubber sole. Shoe size selection: female 35-40 (customized at 40), male 39-45 (customized at 44.45),