In 1990, Playtex purchased Jogbra from Lindahl and her partners. This was followed by research by Christine Haycock, associate professor of surgery at the University of Medicine and Dentistry of New Jersey. She measured breast movement of women running on treadmills. Sought out by bra manufacturers for her expertise, she advocated wide bottom bands for extra support and firm straps that minimized breasts bounce. Renelle Braaten, a Montana hairdresser, struggled to contain her DD-sized breasts while playing racquetball and volleyball. Unable to interest mainstream bra manufacturers, she collaborated with freelance apparel designer Heidi Fisk, and founded Enell Incorporated. After considerable lobbying, she persuaded Oprah Winfrey in 2001 to try her bra. This led to very positive reviews in "", a 2001 appearance on "The Oprah Winfrey Show", and a huge surge in orders.