I have this shorts in Coco and Lava in XS and they fit well, but as my legs are not very thin I wished they were slightly looser on the legs, so that is why this time I decided to go with size S and unfortunately, that was a mistake. I like that the S is looser on the legs, but now they are too big on the waist line so I have to wear them lower on the hips and if I loose any more weight then they will probably just hang unflattering on me even lower and you can tell that this style is not meant to be worn too low and I prefer to wear it higher. So I decided to order them again in XS. However, I still kept the ones in size S, because privately shipping back from Europe is ridiculously expensive, which is almost half the price of the shorts. Other than that I can say that these shorts are very comfortable and super stretchy. You are not limited in your movements while doing any kind of sport. The material feels very soft too. In the picture you can see the difference between the two sizes . I hope this is helpful if anyone is struggling to decide which size to buy. The measurements are in cm.