I searched for two weeks for counter height stools that would be the least obtrusive.  We had plain backless stools that tucked under completely before, and didn't want to overwhelm the space with a high back.  I'm so pleased with these.  We can slide them in most of the way and they don't stick out very much.  They are easy to slide on our tile, lightweight enough to pick up and sturdy enough for our 3 year old to safely climb.  The other reviews were correct in saying they came very well packaged and completely assembled. The only con is that they can leave an imprint if you sit long enough wearing shorts (we live in FL).

Pros: Amazing price, lightweight but sturdy, slides in close to counter, No assembly
Cons: Leaves an imprint on back of legs