sandals
A shoe is only slightly larger than the foot that uses the shoe.
analogy
Clearly you are asking about the insulation strength of a shoe. What kind - wet or dry? If the shoe is wet it will conduct enough electricity to shock your foota tiny little bit if you put your foot in it. But if it is not wet the only thing that could shock your foot while in it would be something like a lightning bolt.
covers over 20 pairs
sandal
Sandal or slipper 😉
The top part of a shoe is called the upper
A good shoe for sending your kid out in the rain would be the rain boots because it covers the whole foot and they won't get their feet wet.
Dude its a sandal...
shoe
You should wear the left shoe on your left foot.
A kind of shoe that is worn by strapping the sole of the shoe onto the foot would be sandals. There are many different varieties of sandals including flip-flops, barefoot sandals, Grecian sandals, Ho Chi Minh shoes, and even T-bar sandals.