Tried those, got some Shure ones. In normal use they stay put for about 20 minutes but gradually work loose and pop out. On the turbo trainer they’ll not stay put for more than a couple of minutes and once I get a proper sweat on there’s really no point trying to put them back in.
For the time that they are sat properly in the ear the sound quality is great though.
Wierd, I’ve never, ever, had a problem with mine coming out on their own, even when really hot and sweaty, it’s getting them out in a hurry I struggle with, they fit so tight.
Getting them in is sometimes a hassle, I usually just moisten them to get them to slide into place, but once in, that’s it. In fact, my Shure ones have taken on the shape of my inner ear, almost like custom fit ones.
I can’t understand why yours don’t stay in place.