The purpose of a typical swim cap isn’t to keep your hair dry, but to keep your hair out of your way and increase speed in the water.

If you’re not concerned with resistance in the water, you might have better luck with caps meant to keep hair dry vs. just tucked away like this: Long Hair Swim Cap - Swimming Caps for Women Men - Extra Large Swim Caps - Waterproof Silicone Swim Cap - Dreadlocks Braids Afro Hair Extensions Weaves https://www.amazon.com/dp/B07D9423VH/ref=cm_sw_r_cp_api_glt_fabc_WH4BGENBKGDX7KP8S9NA?_encoding=UTF8&psc=1