I've worn these shorts biking so far. I'm 5'4" and weigh ~110 lbs and chose the size small based on the suggested sizing chart. The shorts are meant to be fitted so I think they fit as they should but for me they give me a little fat bulge above and below the tight band at the bottom that keeps them from riding up so they seem just a little small. My meausurements put me right between a Sm and XS but I elected to go with the small and I'm glad I did, if you're at the top end of a size range I would suggest purchasing the next size up. Even though the fleece is thin it does offer a reasonable amount of protection, my butt wasn't sore at all after yesterday's bike. I do have a rough seam on the L inner thigh that is rubbing and is pretty annoying, but the other one is fine and since these really don't move I haven't had a problem with it causing skin breakdown.I don't really like the look of these shorts for a couple of reasons: 1. The wide contrasting color band at the top looks good in the front but dips down in the back and really makes my butt look big, I have a pear shape with more of a round butt and I just don't need any emphasis in that department. I think a flat or athletic butt would be complimented by this design feature. 2. The tight bands at the bottom of each leg definitely give me a fat bulge (like a muffin top but on my legs), yuckOverall I bought these for their performance and not appearance so I would still recommend them as a purchase to someone else. There aren't many reviews out right now so wanted to share my thoughts on look as well. I will update this review after I swim to rate their performance during the swim and then when wet on the bike and hopefully dry by the run.Update: performed great on the swim and dried pretty quickly on the bike. I will say the fleece in the crotch remained wet a little longer than I would've liked while on the bike and was a little uncomfortable but after about 12 miles it was dry and definitely dry by the run.