Science Fair Project Encyclopedia
A Jammer is a type of men's swimwear worn primarily by competitive athletes to obtain speed advantages.
Jammers are made of nylon and lycra/spandex material and have a form fitting design to reduce resistance caused by water. They provide moderate coverage from the mid-waist to the area above the knee, somewhat resembling compression shorts worn by many athletes.
The jammer style is preferred by some swimmers as a conservative alternative to speedos or competitive briefs by providing greater leg coverage. One downside is that they also add slightly more water resistance.
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