The advanced size chart shows the range between loose and tight fittings (loose - tight). If you have a chest circumfence of 95cm, a size A2 would fit loose. If you have a chest circumfence of 105cm, a size A2 would fit normal. If you have a chest circumfence of 111cm, a size A2 would fit tight. Please note that "normal" in compression wear is "normal tight". So, if you like it more loose or more tight, please keep that in mind.