Multi-sport briefs are padded swim suits that can be worn to run, bike and swim in without needing to change clothes during a race. They were very popular in the early days of triathlon, especially for short races where transition times could greatly effect race times. It is almost impossible to find padded swim briefs today. Most triathletes are wearing padded one piece suits and/or jammers For more information on trisuits Click Here! For more information on Jammers Click Here!