SOn unas pantuflas cómodas calientitas y bien hechas. They are so comfortable because as a non driver I do a lot of walking in my shoes and comfort is a must. ###############################I have to edit this, sorry, but I found out that this product never worked, maybe some of the chargers are defective. now the problem that I found out with this pair is that one pair is loose and one is tight which is really odd. I had been using a pair of wired over the ear headphones and / or my LG wireless earbuds that sit around your neck. They are comfortable for walking g shoes. My old pair finally wore out during a recent camping holiday after years of service. It has endured water spills and drops, with no problem. Heres a great pair of slippers that dont look like slippers and goes beyond traditional slipper functionality. Thats all that really counts besides durability.