This is a really well made object, soft and firm. I've never used something like this before, and thought it could be difficult to insert. However, it's actually ideal.
I used lube and it was very easy to get comfortable. It did take a while to get used to the sensation before starting the vibrator but it gives a whole range of sensations, internal and external - and rocking on it changes these completely.
You could come (if you wanted to) very quickly - what I did was 'hold back' to build to a very powerful orgasm - excellent!