The 9 was too small. If you dont do it, i bet you wont be able to install them. Last year I ordered a pair of Voyager Mid Hiking Boots in 13 thinking that 13 would give ample toe room. THINGS ABOUT THIS LIGHT BAR It sounds great either way. However, much to my surprise, I read it in the space of 24 hours. Not sure what others are complaining about. It will probably need a finishing coat to ensure it doesn?t keep peeling. Needless to say, I was dancing 2-3 hrs straight without any discomfort not to mention standing on my feet for another 2 hrs. Not so with these flip flops -- they are comfortable from the moment I slipped them on!