I found myself lost and wishing I knew what certain characters were saying. I wouldnt say its work professional but my office is SO cold year round that they understand. For the price I HIGHLY recommend these earrings! Turns out i was able to just swap them. Partamos de eso. Ive been using bluetooth over-ear headphones frequently for many years, previously primarily two pairs of Bluedio R+ Legends, which I thought were excellent, had spectacular bass (and I am a man who enjoys his deep, articulate, thorough, controlled but punctuated bass. TL;DR: These slippers are okay. I would recommend to a friend. I probably will be buying a couple more colors. But they are very easy to write on.