I am a size 4 in leggings and asked the associate at the outlet which size and they directed me to size Medium but these are far too big for me. I purchased 2 packs of 3 and only wore one pair but had thrown the packaging away. I am not including the pair I tried on for hygienic reasons so this is a set of 5 unworn invisiwear thongs. My loss so hoping someone can use these!