For beginners who are using something like this for the first time, it is just what they need. The size, at 18cm, is suitable if you want to take it with you while traveling and its quality is quite good. The suction cup it has keeps it stable enough and it is very flexible, so you can use it in different positions instead of just the harder ones. It is almost like the real thing in terms of realism and it cleans easily with warm water and soap. I would recommend washing it before and after use so that you don't have any unpleasant surprises. To use it, I suggest using a water-based lubricant, as they are easier to use and do not damage the texture or material. The size, because it is not mentioned in the description, is 18cm, and the insertion size is 13cm, which is what the customer is more interested in, which is why they do not mention the overall size.