Helen Parr (a.k.a. Elastigirl) (voiced by Holly Hunter) is Mr. Incredible's wife. Helen can stretch any part of her body up to 100’ (34 m) and can be 1 mm thin. She can also reshape her body in a variety of ways. In the movie she becomes a parachute and a rubber boat, and has used her arms for swings and a slingshot. Originally a feminist while single, since her marriage to Bob Helen has become a dedicated spouse and mother, and is frustrated with her husband's continuing dreams of glory. Helen is also an experienced jet pilot (coming from having a close friend who flew her around the world when she was a Super). Her sharp wit and superb espionage skills, as well as her experience as a superhero, make her an excellent tactician and leader.
Source: Wikipedia, "List of The Incredibles characters", available under the CC-BY-SA License.