I've looked at a lot of universal adapters. Yes, this a Heymix, but hey, it's a Heymix Professional. Most of the other ones are probably rebranded Heymix anyway.
This is a new model released in March this year. It has the smallest footprint at 5.5 x 5.5cm according to the photos (others are about 5x7cm). It's one of the lightest at 130g. It's rated at 2400W with a 10A fuse.
Tick the $5 coupon, add another one in black and do the same. When you check out, it's $17.88 for 2. not working anymore
I think it should be ok since it's only an adapter, and not a charger that explodes. I've spent about an hour looking at travel adapters, and think this is one of the better ones. It's also very cheap right now for Prime members. I bought 2 so if one dies, I have another, or I can change the fuse that costs a dollar.
Wow, heymix are now selling a pro firestarter.