Blue and brown anatomically-shaped narrow width ?Blue Footbed?
insole from Birkenstock. They correct flat feet thanks to their
specially contoured shape that supports the longitudinal and lateral
arch of the foot. They are recommended by orthopedic doctors and
physical therapists for shoes with a slight heel. The Blue Footbed is
ideal for anyone who would like to enjoy the unique comfort of
BIRKENSTOCK in enclosed shoes made by other brands too.