thanks, these are great. yeah, before fast skins were banned by FINA, the full body suits were supposed to be faster than speedo briefs. There are also one piece spandex for skin diving / scuba in warmer waters, that aren’t catsuits or dance unitards.
But I really like the Adidas design with the dip-down front groin sewing detail :-). I guess only used ones now, like Speedo’s old, discontinued lined swim thong.