Translation of respiradero

Clara agreed about a month ago to give me her acquaintances' contact details from NYU and Columbia. I have just spoken to her now and she told me that you could help me and send me those files.
The climb was much exhausting than I had presumed. I had forgotten that we were at high altitude where there is less oxygen and that every step required double effort. It was a great exercise.
I found a pair of Nike shoes for a bargain and I do not know until this day why those shoes were so cheap. I am sure that they are not fake, as they are great quality. My wife also bought a pair.