I understood it as a “pop it up” soft cotton sheet with silicone bubbles that help the foal to learn how to walk. The foal puts its hoof ther and the bubble “sinks” making a popping sound. For the foal is like a game, so eventually they will try to pop more silicon bubbles with their hoofs and they will try with the ones that are more close to them, which eventually will make them walk.
I’m getting ready for another comic, however I’m also thinking in leaving fluffies for awhile. Is been really tired since I use a mouse to draw and it takes me a lot of hours only to come with one-shots.
I do that as a way to mark those are the legs in a explicit way. Since I don’t have a drawing tablet, I can’t draw a specific geometry that looks different from the main body. Basically without the legs of different color, I have a hard time drawing the fluffy.