Very very tight. This is the second tightest onahole I've ever used.
You need to be rock hard to use.
The material is quite rigid and therefore does not provide the best feeling. It could be a rough experience with the wrong or too little lubricant.
I would definitely purchase again.
I honestly thought this would be good but my expectations failed me. It's a little small and doesn't provide the best feeling. The problem with it was it was too rigid and keeps coming off the penis. The entrance is like only 4mm making it hard to lube.