from the style of those they look like seobean brand
number 81
https://www.ebay.com/itm/Seobean-New...-/322061381153
number 6
https://www.ebay.com/itm/Seobean-New...-/321189470696
when i went to swim at the Y about 2 years ago thats what i wore. i've since quit the Y and will be starting back hopefully first of the year as well. It wont be the Y but will be wearing those exact styles along with
https://www.ebay.com/itm/Seobean-New...-/322057691202
there is nothing wrong with them. they cover everything they need to and at those hours it will be i'm sure mostly adults.
the cut will also keep you motivated. I say go for it!!