With the development of new materials that tightly fit the body and offered lower resistance to water than human skin, this trend was reversed to a complete body coverage from heels to neck and wrists. In 1999, Australian competitive swimmer Ian Thorpe signed with Adidas for an undisclosed six-figure sum, to race in their new bodysuit, although the national team was sponsored and wore outfits designed by Speedo. Thorpe's success in the 2000 Summer Olympics wearing the Adidas full-length black polyurethane bodysuit, in contrast to other swimmers wearing textile swimwear (males wore legskins, jammers, or briefs, while females wore racerback maillots), led to other swimming manufacturers such as Speedo and Mizuno to create their own rival bodysuits. Thorpe subsequently worked with Adidas which in 2003 released the adidas JETCONCEPT bodysuit, whose design "came from the V-shaped grooves currently used on the wings and fuselage of civil aircraft".