This is an interesting idea. Some problems: 1. I have a dozen sets of earphones and I don't think there are even two of them with identical cables. How woul

This is an interesting idea. Some problems: 1. I have a dozen sets of earphones and I don't think there are even two of them with identical cables. How would these buttons deal with different gauges of wire covered in different thicknesses of insulation? Cables too big obviously won't fit at all and cables that are too thin will slide, causing slack to be taken up by gravity until you turn your head and painfully jerk the buds out of your ears. 2. What problem is this solving again? I'm actually pretty okay with not clipping my headphone cable to my shirt. In fact, I never do. I have workout buds with an ultra-short cable that's just long enough to reach a clip-on mp3 player that goes on the neck of my shirt. I have canal-phones with their own cable management features to eliminate microphonics. I have a nice pair of woodies with a cable far too fat to fit inside any button-clamp ever made! Allright, I admit it. I'm being obtuse. These are probably designed for Apple buds. Those things are ubiquitous so you can design specifically for their cables and still have a decent market. Their ergonomics are poor enough that they might actually benefit from being attached to your shirt too. Still, it seems rather impractical to upgrade your whole wardrobe to accommodate $5 crap-buds. At $3-4 a button, even just upgrading the buttons (nevermind the time spent sewing!) isn't worth it. Just buy half-way decent headphones suited to your needs!