The Siren is a fashionable 2.75" wedge with contrasting leather designs. This sandal has gore at the inside of the instep for adjustability & a padded front strap for extra comfort. Naot's anatomic cork & latex footbed is wrapped in leather with a microfiber center to prevent slipping and molds to the shape of the foot with wear. The Impulse Collection features a TPR sole which is extremely lightweight. This sole offers the look of a 2.75" wedge without the feel.