Male. 175cm, so your mileage may vary.
The first few bumps go in easy, but after than there's a nice amount of initial fullness and resistance (until there isn't 😊)
I can't tell if it is the first few bumps deep, or if it's the 4th/5th the fullness feeling.
Either way, this is good for priming for the big one in my collection.
Suction is good, even on the wall, which I guess it should given the diameter of the suction base.
It's soft and floppy, which is good for that depth, but not in a useless way.
I don't regret getting this one (unlike a crappy inflatable plug I got, from a different website, which should have been a red flag)