Plugs are decent quality and I really appreciate the safe T-bar base, I find them much more comfortable than plugs with round bases. Each plug has a pretty significant difference in size. The smallest one is pretty small (comparable to a finger or two) and wasn't really useful for me, but could be good for someone with little anal experience who is just starting out. The medium is what I would consider a nice "average" sized plug. The large is quite thick and definitely only for people with anal experience. For me personally, I wish the small was slightly larger and the large slightly smaller so there isn't such a big difference between the sizes, but the plugs are quality, good value for money, and would make a good trainer set for someone new to anal wanting to work their way up to penetration, or as a set for couples with different size preferences/experience levels.