Teletubbies

I saw this TV series among my childhood friends when I was a child, and I watched it from time to time.

When I was a child, I thought these little people were very cute, maybe because they were very bright in color, so they were exciting, so I became interested. If I haven't forgotten, it seems that there are some cars and some music (don't remember? Too clear) But, sometimes I think they look a little weird, but I didn't have any programs on the TV I watched when I was a kid, so it stayed with me for a few days.

I still remember that when I was watching it, I had a question, are these little people real people and put on doll costumes?