It seems you are referring to the stratosphere, not "strotoshere".

The stratosphere is a layer of Earth's atmosphere that sits above the troposphere and below the mesosphere.

Here's a breakdown:

* Starts: Around 6 miles (10 kilometers) above the Earth's surface (this varies slightly depending on latitude).

* Extends to: Around 31 miles (50 kilometers) above the Earth's surface.

So, the stratosphere is located between roughly 10 kilometers and 50 kilometers above the Earth's surface.