I've had this iem for a couple of months now and it's easily one of my favorites. The fit is great, for me.
The accessories are better than I would expect for this price: it comes with a very nice cable that's on the heavier side; leather(?) case and plenty of tips.
It's right on the razor's edge of what I would call a basshead iem. There's a LOT of very well controlled bass; there's very little bloat or bleed into the mids while still giving the iem a warm, verging on dark presence. Vocals are recessed but never lacking. The treble is a bit dark, which I like, but it's still crisp and clear when called for. The technicalities aren't going to blow you away but, for me at least, the iem has a great balance of precision and ease of listening. It's the iem equivalent of a warm blanket. I get porta pro vibes while listening to it. It's very much in my Goldilocks zone for a chill iem.