What's the name of the pole-climbing shoes that workers wear when repairing wires?

The shoes worn by workers climbing telephone poles are called rubber insulated shoes. Can protect personal safety! Why? Its functions are as follows:

1, on the pole, with anti-slip function.

2. Insulated shoes are a kind of safety shoes specially made of insulating materials.

3. Before leaving the factory, a high voltage breakdown test above 15 kV has been done.

4. Good insulated shoes can withstand high voltage up to 6KV.