See, the only real difference is that it looks a bit wrinkled.
So, anyways, this training pant is NOT waterproof. It is designed to get wet to teach out children easier so that they can feel the wetness. It does have a little soaker pad that you can put in it though.
This soaker pad is optional. You could have them be training pants with the soaker, or underpants without them.
My house is just loving these training pants. I think it makes my son feel more like big boy with these on. He goes in the potty a lot more when he uses these. They are easy for him to pull up and down also. But what I really love about them is that because they have the soaker pad, the pee doesn't just come right threw and all over my floor. My son still can not say much more than "no" so it gives me some time to catch accidents. All in all, I give these training pants an A+ and I think they are something that every training child should have!