All my Benoa bikini bottoms are size small and fit well. I have their surf shorts in xs and they fit great. I got these rio bottoms in small and they fit tight and are unflattering because of this. I tried to exchange them for a bigger size but the product didn’t pass their quality check which states it must have tags and hygienic liner + have never been worn. My bottoms had all of these still and I had very briefly tried on. Disappointed in this order, Benoa’s sizing, and their exchange policy.