Is there such a thing as a swimsuit strap connector?

I saw this thing on television that had hooks on both sides and it could slide up and down as you liked. It was advertised for bras, but I think it would work fine on a swim suit as well. Maybe just a velcro tie would work as well?

Here's one example

I think many women are in your position. The one reason your straps slip off is because they are not gadged correctly. May I suggest that you fold to tighten the strap then use a safety pin to test to see if that will not work. If it does use sewing thread to make it permanent.

The other is too buy Clear hook and sliders used for Bra shoulder straps. These are very cheap and all you do is plate some thread to make strong loop and sew this onto the problem area. Hook up and adjust to suit.

Lastly use commercial crocodile clamps and fit some clear cord. Then you can clip and unclasp with ease. A lot of habby shops have various styles of such clamps used to hold women's Jersey's in place.

Bra Strap Connector

I guess there is. You can check from any online sports store or your local sports shop for the item. I think it is available, just that you have to sew it onto your swimsuit if I am not wrong. :x

P.S. I am not really sure, because I often don cross-back. Lol.

i would recommend finding some nice ribbon that matches your suit and then simply pull the two straps together and tie them in place with the ribbon, but make sure that the ribbon wont come undone.