(1).It is light in water and quick drying.
(2).Water flowing is rectified and friction drag can bereduced.
(3).The fabric compresses the body to stop skin vibration andmuscle oscillation to save energy and reduce drag.
(4).It is meant for competition and racing swimming and thereforeyou should expect a very tight fitting swimming trunks and no morebaggy legs as often found in the major brands.