How to properly protect Lightning cables. Because I keep my Lightning cables plugged into my chargers 24/7, I've never felt comfortable with the iPhone connector left open. Well, Cozy USB Caps are the solution. They are easy to attach and fit the connector perfectly. I will be ordering more for the rest of my cables. I think cable manufacturers should include these caps as standard. This is a "must have". Update December 26, 2018: I have reordered these caps several times so that every USB cable that is added to my inventory has a Cozy USB cap. The caps are very durable. I can't do without her.