I bought one for me and one for my daughter. When I ordered these, I was heading to Pennsylvania to visit my daughter. the temps were below 20F. These worked extremely well to protect our ears while out walking and listening to an ebook, podcast, or music. I have yet to try talking on the phone with them. I believe I read they have a microphone... I also use these at night when I am falling asleep, they are much more comfortable than earbuds while listening to a meditation, calming music, or an...