Birkenstock - Kalahari Outdoor. Color Futura Sandcastle. $145.00. 3.4 out of 5 starsAdd to favorites. 0 people have favorited this+1Brand NameBirkenstockProduct NameKalahari OutdoorGenderWomen'sColorFutura SandcastlePrice$145.00Rating3Rated 3 stars out of 5(38)