I like this little set. It’s perfect for anal training. The first size is fairly small. This size is for complete beginners who are probably afraid to try anything larger than a finger. The second size is not that much larger than the smallest one. It is a tad thicker, most likely for those who’ve advanced past just a finger’s width. The largest one is…large. It’s almost twice as big as the second size. This is for when the big kids come out to play. I see the third size as used by someone who has already ventured into the smaller dildo territory or the real thing. It’s not recommended to try the largest if it’s your first time. It’ll probably hurt a lot even with a ton of lube. I do recommend this and it looks and feels great. Just take your time with it. 😉