I purchased this cord lock to protect an extension cord which I need to power my heated outdoor mat. I used it all last winter and it stayed dry inside through rain and snow. I took inside for the summer and just put it out again.
This lock is adjustable in size, I can adjust its size to fit a variety of plugs and make it larger or smaller as needed. It is made out of heavy duty plastic and looks as good as it did before spending the winter outdoors.
You can find it on Amazon by following this link.
Ali Julia review ★★★★★