Grishko’s 2007 Pro Flex is made on the same last as the 2007 with a unique design allowing it to be very flexible, comfortable, and quiet. A new, more flexible material used for the inner sole helps to save muscle energy while dancing. The Grishko 2007 Pro Flex will help develop strength in toes and lift so one does not sink down into the shoe. Its flexibilty fills the needs of dancers at both the beginner and professional levels. Other features include a 3/4 shank in one strength which is flexible.