When the weather changes and we have more severe flair ups we use CeraVe Moisturizing Cream. It is hard to assess durability after just a month, ask me in a year; my old one which is much thicker lasted 6 years. The bottoms have flattened a lot so they will slip off my feet now if I am not wearing socks. It picks up sound very well on one side of the mic, and rejects it very well on the other. I wore them only at night when I got home from classes. I wear these very often at work and they are very comfortable for both walking and standing. I have tried anything but seems like the LED chips burnt somehow. Bad luck, my friend bought from another vendor The rack itself looks sleek and well made, not junky at all. Por suerte y gracias a su bajo peso podemos aguantar bastantes horas antes de que nos duela la coronilla.