NWOT Ja-Vie Navy stripe Jelly Flats, Size EU 40

From Website: Made of patented technology: With a half inch of cushion in the ball of the foot and arch this flat provides the most cushioning and comfort of all ballet flats-that's why we call it better than barefoot. Blister proof, with breathable cotton lining and custom sole grip design. The jelly exterior is 100% flexible, so it molds to your foot and provides unparalleled comfort. Remember that Ja-vies are EU sizes—you may need to size up!