Comes well-packed in a tough moulded plastic package, on which you'll need a tough pair of scissors to cut open (do keep the enclosed display card and leaflet for the instructions and future reference). Early days as to time-related reliability of this item, but it works perfectly well nonetheless, even after my carrying out many multiple safety cut-out tests using the adaptor test button, and one test actually shorting (earthing) out the circuit supplied through the adaptor, which immediately caused the adaptor to trip, which it should do, of course!
The delivery time of this item was staggering; ordered mid-afternoon one day, and delivered by our postman on his round the very next morning!