Birkenstock - Sonora Rugged. Color Black Oiled Leather. Low Stock. On sale for $155.00. MSRP $170.00.. 3.7 out of 5 stars5 left in stockBrand NameBirkenstockProduct NameSonora RuggedColorBlack Oiled LeatherPrice$155.00MSRP: $170.00Rating4Rated 4 stars out of 5(42)