Can I mail this in a regular envelope?

Question

It's just a pair of headphones going across the city.

Could I just put like 4 stamps on it?

Or should I use a padded envelope..

and could I just put multiple stamps on it?

I'm trying to avoid making a trip to the post office..

Answer 1

You must package it to pass Post Office guideline for a mailig package. Put it in a box stuff plastic bags around it so it won't rattle and it will pass.