Mepro Worldwide Travel Adapter with Dual USB Ports Universal All-in-one Charger [US UK EU AU] Plug (Blue)

I am a US native that purchased this travel adapter to use in both the UK and France. The slide mechanism is nice, but there isn't a lock to keep it in place. When attempting to use in the UK, the plug wouldn't contact properly, and it would slide back in. I found that I would have to physically hold the slide down with my finger to properly connect to a port. The blue indicator light is helpful to know if you're good to go, and the travel bag is a nice touch. Overall, a solid purchase for the price.