La comodidad pues es la que se espera de esta marca y lo que más me gustó fue el tiempo de entrega, ya que en realidad fue muy muy rápido. According to the specifications. Don?t make the mistake we did in double-checking the detailed pictures and thinking that the grey bars across the top are steel; they?re black, and they?re separate. ??P. They are incredibly comfortable and have the support that most of my shoes lack. Bought these to replace a cheap pair (not crocs) that had thin soles and I could feel stones through the soles. It is powered by a USB connection. Worked perfectly fine only reason for 2 stars is that it came broken a piece was snapped off of the end but I didn?t want to wait another week to get it and it worked just fine other than that it was perfect And it looks idiotic with the middle shelf barren. I love the sleek modern look to it.