Hi Calaveras! If you notice on the sizing chart the measurements are in centimeters and it's noted on the title of the sizing chart. I'm glad you mention standardization because we're working on doing just doing in the near future; the only part that gets tricky is that we work with hundreds of vendors all producing in different territories, measuring in different ways so it's a bit easier said than done. We're definitely working on a standard size chart for all collaboration projects since we control those a bit more, and will be working on regular drops as well. Thanks for your patience and interest on this drop!