Drag shorts and jammers? I'm so confused.?

OK so I was talking with my friend who was a swimmer and he said that when he swam in high school they wore drag shorts. So I was like wtf? What are drag shorts? So he tried to explain and said it's basically a normal bathing suit and it gives you resistance when you swim so you get a better workout. So my... show more OK so I was talking with my friend who was a swimmer and he said that when he swam in high school they wore drag shorts. So I was like wtf? What are drag shorts? So he tried to explain and said it's basically a normal bathing suit and it gives you resistance when you swim so you get a better workout.

So my question is, if you are trying to swim for a good workout should you wear these drag shorts, or does a normal bathing suit give you the same amount of resistance like he said? Also if you could describe what they look/feel like that would be cool. Do 'drag shorts' really give you that much extra resistance, and would they be useful for improving your workout (if you are using swimming as a form of exercise)?

Also what are jammers? While trying to learn about drag shorts I saw people talking about jammers a lot and comparing the two.

Also where can you buy these things, and can someone give me a link w/ a picture of good ones???
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