Sometimes shopping for headphones that aren't clunky and obtrusive can feel a bit like a Goldilocks and The Three Bears adventure, with in-ear buds that range from overwhelmingly too large to unimpressively too small. Thankfully Normal, with the tagline "One Size Fits None," has stepped up the challenge to create couture-level headphones for your very own ear drums. Through some genius magic, and lots of technology, Normal has developed an interactive app that charts the dimensions of your inner ear and uses 3-D printing innovations to create a customized ear bud that fits like a glove and provides superior sound quality. Read up on the details and pixie dust that go into the ear buds here, download the app via the iTunes store and watch their informative and oddly entertaining video above.