My first purchase was a set of small old-style FB. They aren't my favorite, but I've used them with both kids now. In fact, here is a picture of when I got them. (I was very excited.):
Oh I guess I didn't keep all of them. I only kept the bug prints, the red, and the greens. The others were irregularly sized - the black and blue ones had really tight leg elastic and the blue ones were a lot bigger. One reason why I dislike FB.