Being a ballerina isn't all pirouettes and other French terms. Apparently, they have comfortable shoes like the Keen Women's Rivington Ballerina CNX Shoe. Using Keen. CNX construction, the Rivington combines protection, durability, and the Keen fit in a slim, efficient, lightweight silhouette based on a minimal drop, an integrated arch contour, and a durable leather upper construction. These bonuses make the shoe natural to move in and supportive where you need it. Extra comfort support lies in the Keen. Zorb full-length, foam-based cushioning layer that reduces the impact of every stride, maintaining your energy and busting the myth that ballerinas suffer from sore feet.