2-prong Euro to US plug adapter?

This is really trivial, but anyway…

Can someone recommend a 2-prong Euro to US wall plug adapter that actually fits well? I don’t need voltage conversion. I ordered some from Amazon a while back, and they don’t fit well, basically don’t work. I think these were the ones: Amazon.com

I’ve looked at a bunch of others on Amazon, and most of them come with similar complaints. So I thought maybe I’d ask here for some recommendations. Thanks!

got mine from Gearbest. it is somewhat tight, but not too restricting either. not the cheapest, AE might be better