At first it is a bit odd, it is essentially a square of textured plastic. After use, I can say it is surprisingly good. There are multiple ways of usage and angles of holding it, rotating changes the feeling. It is very easy to clean, and storage is also easy because it is flat. It is very loud, be aware of that! Overall very pleased, good value, can recommend.
The onasheet monster G is something I wanted to try. It's a nice alternative in case you don't have the mood of using an onahole because you're tired of cleaning it. This one, although not like an onahole, gives you a nice feeling. The downside is that it can be pretty noisy. You have been warned. The cleaning is ridiculously easy and drying as well. Overall, it's not bad for it's price.