ok I like Exoficio brand and their concept on staying cool while traveling etc. this bra is a great idea but just poor execution. I am a 36C, not a full C. The XS fit fine around the ribs and i got that size based on other reviews. The bra just makes me look like Im 12. It seriously flattened my chest. Im average size and this bra just cant be worn under clothing and look normal (well for me anyway) ok, i have had 2 kids, and things are a little more "mushy" but still, its a no-go. Returning. I got a Natori 36C bra that has mesh around the back closure area and its wireless. AMAZING. will be taking that to Thailand and not this one