The engineering of speed: why elite swimmers ditch the shorts
In short: In competitive swimming, every millisecond is a battle against fluid dynamics. While many recreational swimmers opt for roomier trunks, professional athletes rely on form-fitting briefs to minimize drag. This isn't just a fashion choice; it is a calculated move to reduce water retention and friction.
The modern swim brief gained global prominence in 1956 when Australian swimmer Murray Rose won three gold medals at the Melbourne Summer Olympics wearing one produced by Speedo. The brand became so synonymous with the garment that 'Speedo' became a genericized trademark, used globally to describe any racing brief regardless of the manufacturer. While often colloquially dubbed 'budgie smugglers' in parts of the UK and Australia, these garments serve as the standard for competitive diving and water polo.
The primary goal of high-performance swimwear is drag reduction. To achieve this, manufacturers use materials like Spandex (Lycra) because they hug the body closely to minimize friction. However, there is a technical trade-off: while Lycra suits are preferred for actual racing due to their sleekness, they are more vulnerable to chlorine damage. Consequently, athletes often train in nylon suits, which offer the durability required for long practice sessions and provide an extra resistance benefit.
Specific sports dictate unique structural requirements. In water polo, players wear tight-fitting racing suits with panels larger than 3 inches to minimize the amount of fabric opponents can grab during underwater play. Some high-level players even layer two suits for added protection. Conversely, some triathletes use specialized briefs that incorporate light crotch padding—a lighter version of a cycling chamois—to facilitate the transition from swimming to biking and running.
Cultural preferences vary significantly by region. While swim briefs are common casual beachwear in Continental Europe and South America, they remain less common for recreation in the United States and United Kingdom, where board shorts are preferred. Interestingly, some French pools mandate form-fitting suits over shorts specifically for hygiene reasons.
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- Summary by Intellect · source: Swim briefs
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