The wet look, swimsuit material is not translucent at all. Some of the other materials are, but not the wet look.
They are not cheap but the quality is outstanding. They are usually around $20 each and about the same to ship. Since there is not much to them in either weight or volume, the shipping cost of several is virtually the same price as for one. Sometimes they can be found for less money on websites other than the official TM Collection website. Try
https://global.rakuten.com/en/store/txmmens/
I just noticed that they have a great deal right now on the tiny tie-side string bikinis:
https://global.rakuten.com/en/store/..._browsehist_en
Most styles are one size only. When you first get them out of the package, you will think there is no way I can stuff myself into that tiny little thing (and then go out in public!). But they do stretch to fit most. They offer just enough coverage to be legal, which is perfect as far as I am concerned. Complete shaving is necessary. They appear considerably skimpier on me than they look on the mannequins in the photos. That depends on the size of the wearer.