Birkenstock - Madrid Big Buckle - Nubuck Leather. Color Sandcastle Nubuck. $140.00. 4.0 out of 5 starsBrand NameBirkenstockProduct NameMadrid Big Buckle - Nubuck LeatherGenderWomen'sColorSandcastle NubuckPrice$140.00Rating4Rated 4 stars out of 5(440)