This is a really good use for a lady's cleavage. I always had trouble with that extra tennis ball. I really like the cute little tennis outfit for ladies, the one with the tennis skirt not the shorts. And that extra ball for the second serve in case you miss the first serve was always a bother for me. I can't hold two tennis balls in one hand and I certainly don't want to stuff it into a pocket and spoil the lines of my outfit. Some how stuffing in the cleavage seems so much better.