Really easy to use and expands a good amount. If you're on the fence between choosing medium and large, go with large as it starts off a bit fuller. Quality though seems top notch and it feels safe and well put together though a bit pricey.
First time I used this plug, I was a little overzealous with the inflation... Like any anal toy, remember to take it slow! Once you find a level that works for you, it's nothing short of an amazing experience. Certainly a fun toy to at least try once in a while.
This was a lot of fun to play with