Review on TUDIA Klip Snap On Charging Cable Saver Protector - Enhancing Compatibility with Apple 30-Pin Charging Cables for iPod, iPhone, iPad, and Apple Watch (Gray) by Chris Young

Unfortunately they don't work. This is because they do not grab or attach the cable connector itself - they just attach to the cable and slide over the cable with minimal tension or pressure. If they're designed to actually grab the connector to prevent the cord from being pulled over the connector, they *may* actually work. But as a "protective" addon, they (IMHO) just don't add any protection.