The fit is exactly the same between the two styles, Sun Goddess (SG) and X-Boyfriend (XB).
The functional difference is SG allows you to adjust only one strap on the back with the velcro, XB allows you to adjust all 3 straps! The velcro materials we chose to use is non-tangly, so your hair will not get caught and stuck in it.
Sun Goddess allows to wear your ponytail/bun at ANY height (low, high, anywhere in-between) as the ring is movable. It is easier to put on because of that function, you never have to think of how to fit your pony in the hat as the hat adjusts to you! XB allows only for high or low pony/bun locations.
All in all, both designs are just a personal preference! In most cases ladies chose what they think looks best/more appealing to them. Sun Goddess has proven to be our best-selling design 🙂