Couch Seat Comfort good, but after each rising partly violent electric shock when touching metallic objects (amplifiers, spotlights). Bed stands on stone tiles. Equipment / outlet are properly grounded. Happens according to the enclosed product description only if room humidity is too low. But is nonsense. Have 50-55% rel. Humidity. Also, my expensive coffee has also microfibre and since nothing happens. Keep the bed anyway, and hold after rising briefly at the adjacent heating. Here you can feel strangely nothing ./// Addendum: After my son has it slept two nights, this charging no longer occurs. So probably only the beginning of a problem. So now 4 star.
