How to properly patch a frayed iPhone charging cable

Here is my iPhone cable. The plastic sheath has broken and the braided cable covering is fraying.

These are 10mm shrink sleeves. You can get bags of these on Amazon for a couple dollars. 10mm is needed to fit over the cable plug.

I'm using two because I want the end result to be extra stiff to help protect the actual wires inside.

Using a lighter I shrank one sleeve over the damage snug against the plug end. Then I slipped another wrapper over it a bit further down to make sure I covered all of the cracked plastic. (don't touch the flame to the wrapper, just the heat right above the tip of the flame)