Alegria Women's Duette ShoeSize Chart It's a nursing shoe, it's an everyday shoe, it's even an out about the town shoe! The Alegria Duette comfort loafer in Black Patent features man made materials with lots of charm and comfort. On the comfort side, you'll find a padded collar for ankle support, a double elastic gore that provides easy on and off wear, the signature removable and replaceable Alegria footbed for excellent arch support and a dual density polyurethane slip