I got this set because I wanted a quick and simple kit I could use to help get my girlfriend more comfortable with anal sex. While I have never had an issue with plugs of varying sizes, she is far more sensitive and requires time and a gradual increase in size. I felt like this would be a perfect fit for that purpose.
When we received the toy we were pleased with the flexible soft rubber that makes them far more comfortable than hard plastic plugs. The smallest of the plugs is about the size of my thumb. They sizes then go up incrementally with the largest one being about the average girth of a dildo.
When we got the toys out and ready to use we were concerned with the flexibility and size of the pull loop. Our primary concern was whether or not the plug would be able to slip inside during use. As we used the smallest sizes on her, working her way up to the third size. She found the plug quite comfortable and due to the size of the loop there was no discomfort whereas other plugs, with wider bases, can be uncomfortable to use. After getting her way up to the third size she felt comfortable enough to agree to use them more often.
When it was my turn we pulled out the largest of the set. It too slid in quite easily. This time though we had a scare moment where it almost slipped in all the way, loop and all, and she was just barely able to catch it. It was also difficult and uncomfortable to remove when the time came.
The plastic of all the plugs was very easy to clean. It also has no odor, and as noted previously, is very soft overall. While I will be more wary of the largest of the group, I found the set to be a great pick overall. It is especially helpful for someone new to anal sex that needs to work their way up.