There is only one real way to find out if the item is large or medium...does it have purple on it? If yes...its large. If no...medium. LOL
Just kidding! I use the hours thing to decide the size more than anything.
Right. By time, it's a large for me.
Oh, the large doesn't have purple but the small has purple IN it and bright green ON it. And technically the small is a medium but that's my bad. I should have done the added bit before assembly.