Perfect for cold winter days! The BIRKENSTOCK Uppsala is a discreet mid-high boot with a warm lining. The buckle on the shaft is another eye-catcher. The upper is made of particularly soft suede that hugs the foot like a second skin. Removable cork-latex insole. Upper: suede with shearling lining Footbed lining: natural leather Sole: lightweight synthetic sole Made in Germany "insole.