Birkenstock - Kalahari Outdoor. Color Futura Khaki Birko-Flor. On sale for $106.46. MSRP $145.00.. 3.6 out of 5 stars+2Brand NameBirkenstockProduct NameKalahari OutdoorColorFutura Khaki Birko-FlorPrice$106.46MSRP: $145.00Rating4Rated 4 stars out of 5(29)